Is it possible to change the transparency of a layer in a web map with ArcGIS API for Python? I see I can add a layer Working with web maps and web scenes | ArcGIS for Developers but need to adjust the transparency after adding it.
And the answer is yes. Below snippet updates a web layers symbology every 5 mniutes based on some numpy arrays (generated elsewhere).
<SPAN class="keyword token">with</SPAN> open<SPAN class="punctuation token">(</SPAN>out_fold<SPAN class="operator token">+</SPAN><SPAN class="string token">'/JSON/NEXRAD_SYMBOLS.json'</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'r'</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> f<SPAN class="punctuation token">:</SPAN> data <SPAN class="operator token">=</SPAN> json<SPAN class="punctuation token">.</SPAN>load<SPAN class="punctuation token">(</SPAN>f<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">with</SPAN> open<SPAN class="punctuation token">(</SPAN>out_fold<SPAN class="operator token">+</SPAN><SPAN class="string token">'/JSON/NEXRAD_SYMBOLS.json'</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'w'</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> f<SPAN class="punctuation token">:</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> stMinValue data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> x data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> y data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> z data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">4</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> stMaxValue data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> <SPAN class="string token">"<"</SPAN><SPAN class="operator token">+</SPAN>str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>stMinValue<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>x<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>y<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>z<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">4</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> <SPAN class="string token">">"</SPAN><SPAN class="operator token">+</SPAN>str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>stMaxValue<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"authoringInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"minSliderValue"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> round<SPAN class="punctuation token">(</SPAN>stMinValue<SPAN class="punctuation token">,</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"authoringInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"maxSliderValue"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> round<SPAN class="punctuation token">(</SPAN>stMaxValue<SPAN class="punctuation token">,</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> prMinValue data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> c data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> d data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> e data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">4</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"value"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> prMaxValue data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> <SPAN class="string token">"<"</SPAN><SPAN class="operator token">+</SPAN>str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>prMinValue<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>c<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>d<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>e<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"stops"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">4</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"label"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> <SPAN class="string token">">"</SPAN><SPAN class="operator token">+</SPAN>str<SPAN class="punctuation token">(</SPAN>round<SPAN class="punctuation token">(</SPAN>prMaxValue<SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"authoringInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"minSliderValue"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> round<SPAN class="punctuation token">(</SPAN>prMinValue<SPAN class="punctuation token">,</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">)</SPAN> data<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"operationalLayers"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"layerDefinition"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"drawingInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"renderer"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"authoringInfo"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"visualVariables"</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="string token">"maxSliderValue"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">=</SPAN> round<SPAN class="punctuation token">(</SPAN>prMaxValue<SPAN class="punctuation token">,</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">)</SPAN> f<SPAN class="punctuation token">.</SPAN>write<SPAN class="punctuation token">(</SPAN>json<SPAN class="punctuation token">.</SPAN>dumps<SPAN class="punctuation token">(</SPAN>data<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> f<SPAN class="punctuation token">.</SPAN>close<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">def</SPAN> <SPAN class="token function">search_item</SPAN><SPAN class="punctuation token">(</SPAN>conn<SPAN class="punctuation token">,</SPAN>layer_name<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN> search_results <SPAN class="operator token">=</SPAN> conn<SPAN class="punctuation token">.</SPAN>content<SPAN class="punctuation token">.</SPAN>search<SPAN class="punctuation token">(</SPAN>layer_name<SPAN class="punctuation token">,</SPAN> item_type<SPAN class="operator token">=</SPAN><SPAN class="string token">'Web Map'</SPAN><SPAN class="punctuation token">)</SPAN> proper_index <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN>i <SPAN class="keyword token">for</SPAN> i<SPAN class="punctuation token">,</SPAN> s <SPAN class="keyword token">in</SPAN> enumerate<SPAN class="punctuation token">(</SPAN>search_results<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">if</SPAN> <SPAN class="string token">'"'</SPAN><SPAN class="operator token">+</SPAN>layer_name<SPAN class="operator token">+</SPAN><SPAN class="string token">'"'</SPAN> <SPAN class="keyword token">in</SPAN> str<SPAN class="punctuation token">(</SPAN>s<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">]</SPAN> found_item <SPAN class="operator token">=</SPAN> search_results<SPAN class="punctuation token">[</SPAN>proper_index<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN> get_item <SPAN class="operator token">=</SPAN> conn<SPAN class="punctuation token">.</SPAN>content<SPAN class="punctuation token">.</SPAN>get<SPAN class="punctuation token">(</SPAN>found_item<SPAN class="punctuation token">.</SPAN>id<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">return</SPAN> get_item <SPAN class="keyword token">def</SPAN> <SPAN class="token function">update_wm_layerdef</SPAN><SPAN class="punctuation token">(</SPAN>item<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN> item_data <SPAN class="operator token">=</SPAN> item<SPAN class="punctuation token">.</SPAN>get_data<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"*******************ORIGINAL DEFINITION*********************"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN>json<SPAN class="punctuation token">.</SPAN>dumps<SPAN class="punctuation token">(</SPAN>item_data<SPAN class="punctuation token">,</SPAN> indent<SPAN class="operator token">=</SPAN><SPAN class="number token">4</SPAN><SPAN class="punctuation token">,</SPAN> sort_keys<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">with</SPAN> open<SPAN class="punctuation token">(</SPAN>out_fold<SPAN class="operator token">+</SPAN><SPAN class="string token">'/JSON/NEXRAD_SYMBOLS.json'</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> json_data<SPAN class="punctuation token">:</SPAN> data <SPAN class="operator token">=</SPAN> json<SPAN class="punctuation token">.</SPAN>load<SPAN class="punctuation token">(</SPAN>json_data<SPAN class="punctuation token">)</SPAN> item_properties <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">{</SPAN><SPAN class="string token">"text"</SPAN><SPAN class="punctuation token">:</SPAN> json<SPAN class="punctuation token">.</SPAN>dumps<SPAN class="punctuation token">(</SPAN>data<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">}</SPAN> item<SPAN class="punctuation token">.</SPAN>update<SPAN class="punctuation token">(</SPAN>item_properties<SPAN class="operator token">=</SPAN>item_properties<SPAN class="punctuation token">)</SPAN> new_item_data <SPAN class="operator token">=</SPAN> item<SPAN class="punctuation token">.</SPAN>get_data<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"***********************NEW DEFINITION**********************"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN>json<SPAN class="punctuation token">.</SPAN>dumps<SPAN class="punctuation token">(</SPAN>new_item_data<SPAN class="punctuation token">,</SPAN> indent<SPAN class="operator token">=</SPAN><SPAN class="number token">4</SPAN><SPAN class="punctuation token">,</SPAN> sort_keys<SPAN class="operator token">=</SPAN><SPAN class="token boolean">True</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN>datetime<SPAN class="punctuation token">.</SPAN>now<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="operator token">-</SPAN>starttime<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">def</SPAN> <SPAN class="token function">main</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN> conn <SPAN class="operator token">=</SPAN> GIS<SPAN class="punctuation token">(</SPAN><SPAN class="string token">"https://www.arcgis.com"</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"user"</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"pass"</SPAN><SPAN class="punctuation token">)</SPAN> item <SPAN class="operator token">=</SPAN> search_item<SPAN class="punctuation token">(</SPAN>conn<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'GRSM_STORM_TOTAL_PRECIPITATION_MAP'</SPAN><SPAN class="punctuation token">)</SPAN> update_wm_layerdef<SPAN class="punctuation token">(</SPAN>item<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">if</SPAN> __name__ <SPAN class="operator token">==</SPAN> <SPAN class="string token">'__main__'</SPAN><SPAN class="punctuation token">:</SPAN> sys<SPAN class="punctuation token">.</SPAN>exit<SPAN class="punctuation token">(</SPAN>main<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN></SPAN>
See... a change of venue and you came up with it
Thomas Colson I moved this question to ArcGIS API for Python to see if it gets any attention
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