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How do i represent the degree (°) & Minute (') symbols in my Python Script

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10-01-2013 05:43 PM
OLANIYANOLAKUNLE
Frequent Contributor
I tried to populate a field by using the line below in my script but I got the error message below. Please how can I represent the degree (°) & Minute (') symbols in my Python Script. Any suggestions?


arcpy.CalculateField_management("GISMainFabric_Line_Clip_0","Bear",'[NUM1] & "°" & [NUM2]',"VB") File "C:\Users\Administrator\AppData\Local\ESRI\Desktop10.1\AssemblyCache\{7F12A0CE-D617-8330-5EBC-E045415D9345}\PlanTool_addin.py", line 105 SyntaxError: Non-ASCII character '\xb0'
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RichardFairhurst
MVP Honored Contributor
Well this one you should be figuring out, since it tells you in the error what the problem is this time.  You missed the underscore in "PYTHON_9.3" (You wrote "PYTHON 9.3")

exp = 'str(!NUM1!) + "\xb0" + str(!NUM2!)' arcpy.CalculateField_management("GISMainFabric_Line_Clip_0","Bear", exp,"PYTHON_9.3")


If you want a space between the numbers and the minutes symbol after the second number, the expression should be:

exp = 'str(!NUM1!) + "\xb0 " + str(!NUM2!) + "'"'


If I had done this in Model Builder and exported it to Python like I normally do this thread would not be up to 16 posts.  That is how I do it normally.

Here is from the Model Builder export of a calculation that worked.

# Process: Calculate Field arcpy.CalculateField_management("GISMainFabric_Line_Clip_0", "Bear", "str( !NUM1! ) + \"\\xb0 \" + str( !NUM2! ) + \"'\"", "PYTHON_9.3", "")

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ChrisPedrezuela
Frequent Contributor
try:
arcpy.CalculateField_management("GISMainFabric_Line_Clip_0","Bear",str[NUM1] + '\xb0' + str[NUM2] + "'","PYTHON 9.3")

I tried to populate a field by using the line below in my script but I got the error message below. Please how can I represent the degree (°) & Minute (') symbols in my Python Script. Any suggestions?


arcpy.CalculateField_management("GISMainFabric_Line_Clip_0","Bear",'[NUM1] & "°" & [NUM2]',"VB")
File "C:\Users\Administrator\AppData\Local\ESRI\Desktop10.1\AssemblyCache\{7F12A0CE-D617-8330-5EBC-E045415D9345}\PlanTool_addin.py", line 105 SyntaxError: Non-ASCII character '\xb0'
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OLANIYANOLAKUNLE
Frequent Contributor
I tried your suggestion and this was what I got below:


Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\ESRI\Desktop10.1\AssemblyCache\{7F12A0CE-D617-8330-5EBC-E045415D9345}\PlanTool_addin.py", line 105, in onSelChange arcpy.CalculateField_management("GISMainFabric_Line_Clip_0","Bear",str[NUM1] + '\xb0' + str[NUM2] + "'","PYTHON 9.3")
NameError: global name 'NUM1' is not defined
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RichardFairhurst
MVP Honored Contributor
try:
arcpy.CalculateField_management("GISMainFabric_Line_Clip_0","Bear",str([NUM1]) + '\xb0' + str([NUM2]) + "'","PYTHON 9.3")



He forgot the parentheses for the str method.  Above revision should work.
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OLANIYANOLAKUNLE
Frequent Contributor
Another error message

arcpy.CalculateField_management("GISMainFabric_Line_Clip_0","Bear",str([NUM1]) + '\xb0' + str([NUM2]) + "'","PYTHON 9.3")
Runtime error 
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'NUM1' is not defined
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T__WayneWhitley
Honored Contributor
Minor omission, I think you forgot the preceding quote on the expression -- that was drilled into me yesterday as I was forgetting it over and over again...

"'" + str([NUM1]) + '\xb0' + str([NUM2]) + "'"
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OLANIYANOLAKUNLE
Frequent Contributor
Still the same error message

("GISMainFabric_Line_Clip_0","Bear","'" + str([NUM1]) + '\xb0' + str([NUM2]) + "'" ,"PYTHON 9.3")
Runtime error 
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'NUM1' is not defined
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T__WayneWhitley
Honored Contributor
...uh, one more thing, I'm not sure but since it is a Python expression do you need the field delimiters (exclamation points) as shown?:

"'" + str(!NUM1!) + '\xb0' + str(!NUM2!) + "'"
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T__WayneWhitley
Honored Contributor
OK, finally...

exp = 'str(!NUM1!) + \'\xb0\'' + str(!NUM2!)'
arcpy.CalculateField_management("GISMainFabric_Line_Clip_0","Bear", exp,"PYTHON 9.3")


...to further explain the expression (exp) I think denoting the fields with ! is pretty much self-explanatory - escaping the inner quotes was a little tricky.

You need to pass \xb0 for the degree symbol but you need to concatenate this inner string with the 2 outer field values (converted to string of course).
But you need to pass the quote as a quote, not to denote the end of the expression component, so \' does that... the outer one \'' interprets the 1st single quote as part of the string and the 2nd single quote denotes the end of the middle component - if in doubt, define exp as I have done above, and print it out...if say NUM1 equals 25 and NUM2 equals 50 (and let's just say the asterisk is the deg symbol - I forgot if this txt editor will properly interpret a deg symbol), then should be interpeted as:

25*50

...let's just say further that you'd like some 'whitespace' after the symbol, then in similar fashion do something like this, adding :

exp = 'str(!NUM1!) + \'\xb0  \'' + str(!NUM2!)'
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OLANIYANOLAKUNLE
Frequent Contributor
Im afraid this is what I got

exp = 'str(!NUM1!) + \'\xb0\'' + str(!NUM2!)'
Parsing error SyntaxError: invalid syntax (line 1)
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