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    <title>topic Can't figure out layer.ReplaceDataSource in Python Questions</title>
    <link>https://community.esri.com/t5/python-questions/can-t-figure-out-layer-replacedatasource/m-p/189722#M14555</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Can't figure this one out.&amp;nbsp; I'm trying to replace a layer's datasource based on a user-input parameter (not shown in the code snippet).&amp;nbsp; I know the SDE path that gets created (BasinPath variable) is correct because I've tested it using other try/except statements.&amp;nbsp; Anyone familiar with this tool?&amp;nbsp; I'm using 10.6.&amp;nbsp; The try/except statement beginning on line 13 is the part that isn't working.&lt;/P&gt;&lt;PRE class="lia-code-sample line-numbers language-none"&gt;&lt;CODE&gt;&lt;SPAN class="keyword token"&gt;def&lt;/SPAN&gt; &lt;SPAN class="token function"&gt;zoomTo&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;info&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; bas&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
    doc &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;mapping&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;MapDocument&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;&lt;SPAN class="string token"&gt;"Current"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
    dataFrame &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;mapping&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;ListDataFrames&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;doc&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;[&lt;/SPAN&gt;&lt;SPAN class="number token"&gt;0&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;]&lt;/SPAN&gt;
    &lt;SPAN class="keyword token"&gt;if&lt;/SPAN&gt; waterRight&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
        MapLayers &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;mapping&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;ListLayers&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;doc&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;&lt;SPAN class="string token"&gt;"statewide_irr"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;dataFrame&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
        Layer &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; MapLayers&lt;SPAN class="punctuation token"&gt;[&lt;/SPAN&gt;&lt;SPAN class="number token"&gt;0&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;]&lt;/SPAN&gt;
        DNRPrd &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"D:\\WID\\WID_SDE.sde"&lt;/SPAN&gt;
        IRR &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; DNRPrd &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"\\"&lt;/SPAN&gt; &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"WID_SDE.Irr"&lt;/SPAN&gt;
        BasinPath &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; IRR &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"\\"&lt;/SPAN&gt; &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"WID_SDE.Irr_"&lt;/SPAN&gt; &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; str&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;bas&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
        &lt;SPAN class="keyword token"&gt;for&lt;/SPAN&gt; layr &lt;SPAN class="keyword token"&gt;in&lt;/SPAN&gt; arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;mapping&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;ListLayers&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;dataFrame&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
            &lt;SPAN class="keyword token"&gt;if&lt;/SPAN&gt; layr&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;name &lt;SPAN class="operator token"&gt;==&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"statewide_irr"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
                arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;AddMessage&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;BasinPath&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
                &lt;SPAN class="keyword token"&gt;try&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
                    layr&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;replaceDataSource&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;BasinPath&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"SDE_WORKSPACE"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"statewide_irr"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="token boolean"&gt;True&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
                &lt;SPAN class="keyword token"&gt;except&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
                    errorMsg &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"Error in dataSourceReplace"&lt;/SPAN&gt;
                    pythonaddins&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;MessageBox&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;errorMsg&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;'Shucks!'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="number token"&gt;0&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
                    &lt;SPAN class="keyword token"&gt;print&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;errorMsg&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Sat, 11 Dec 2021 09:33:04 GMT</pubDate>
    <dc:creator>deleted-user-xWsm0i8XW8uH</dc:creator>
    <dc:date>2021-12-11T09:33:04Z</dc:date>
    <item>
      <title>Can't figure out layer.ReplaceDataSource</title>
      <link>https://community.esri.com/t5/python-questions/can-t-figure-out-layer-replacedatasource/m-p/189722#M14555</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Can't figure this one out.&amp;nbsp; I'm trying to replace a layer's datasource based on a user-input parameter (not shown in the code snippet).&amp;nbsp; I know the SDE path that gets created (BasinPath variable) is correct because I've tested it using other try/except statements.&amp;nbsp; Anyone familiar with this tool?&amp;nbsp; I'm using 10.6.&amp;nbsp; The try/except statement beginning on line 13 is the part that isn't working.&lt;/P&gt;&lt;PRE class="lia-code-sample line-numbers language-none"&gt;&lt;CODE&gt;&lt;SPAN class="keyword token"&gt;def&lt;/SPAN&gt; &lt;SPAN class="token function"&gt;zoomTo&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;info&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; bas&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
    doc &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;mapping&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;MapDocument&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;&lt;SPAN class="string token"&gt;"Current"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
    dataFrame &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;mapping&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;ListDataFrames&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;doc&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;[&lt;/SPAN&gt;&lt;SPAN class="number token"&gt;0&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;]&lt;/SPAN&gt;
    &lt;SPAN class="keyword token"&gt;if&lt;/SPAN&gt; waterRight&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
        MapLayers &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;mapping&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;ListLayers&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;doc&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;&lt;SPAN class="string token"&gt;"statewide_irr"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;dataFrame&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
        Layer &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; MapLayers&lt;SPAN class="punctuation token"&gt;[&lt;/SPAN&gt;&lt;SPAN class="number token"&gt;0&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;]&lt;/SPAN&gt;
        DNRPrd &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"D:\\WID\\WID_SDE.sde"&lt;/SPAN&gt;
        IRR &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; DNRPrd &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"\\"&lt;/SPAN&gt; &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"WID_SDE.Irr"&lt;/SPAN&gt;
        BasinPath &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; IRR &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"\\"&lt;/SPAN&gt; &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"WID_SDE.Irr_"&lt;/SPAN&gt; &lt;SPAN class="operator token"&gt;+&lt;/SPAN&gt; str&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;bas&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
        &lt;SPAN class="keyword token"&gt;for&lt;/SPAN&gt; layr &lt;SPAN class="keyword token"&gt;in&lt;/SPAN&gt; arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;mapping&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;ListLayers&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;dataFrame&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
            &lt;SPAN class="keyword token"&gt;if&lt;/SPAN&gt; layr&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;name &lt;SPAN class="operator token"&gt;==&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"statewide_irr"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
                arcpy&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;AddMessage&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;BasinPath&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
                &lt;SPAN class="keyword token"&gt;try&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
                    layr&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;replaceDataSource&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;BasinPath&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"SDE_WORKSPACE"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"statewide_irr"&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="token boolean"&gt;True&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
                &lt;SPAN class="keyword token"&gt;except&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;
                    errorMsg &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;"Error in dataSourceReplace"&lt;/SPAN&gt;
                    pythonaddins&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;MessageBox&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;errorMsg&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;'Shucks!'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; &lt;SPAN class="number token"&gt;0&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
                    &lt;SPAN class="keyword token"&gt;print&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;errorMsg&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sat, 11 Dec 2021 09:33:04 GMT</pubDate>
      <guid>https://community.esri.com/t5/python-questions/can-t-figure-out-layer-replacedatasource/m-p/189722#M14555</guid>
      <dc:creator>deleted-user-xWsm0i8XW8uH</dc:creator>
      <dc:date>2021-12-11T09:33:04Z</dc:date>
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