1

In the select by attribute how do I replace "AADT", with a predefined string variable?

I don't understand the pattern in "\"AADT\">=" , can you please explain why is it that way when exported from arcMap model builder?

arcpy.SelectLayerByAttribute_management(inFeatures,"NEW_SELECTION","\"AADT\" >="+str(minval)+ "AND \"AADT\" <"+str(maxval))
2

The "\" is an escape character which is used to be able to use the quotes (" symbol) in the query.

Read here https://gis.stackexchange.com/a/149676/14435 about using field delimiters (will fix the right quotes if any) and use Python str.format for cleaner code . In your case, the string would be something like:

var_name = "AADT"
where_query = """ "{0}" >= {1} AND "{0}" < {2}""".format(var_name,str(minval),str(maxval))
  • I noticed if you use three quotes you don't need to put "\" before quotes within the string . – Solaire Jun 17 '15 at 18:02
  • your where_query is invalid :( @Alex Tereshenkov – Solaire Jun 17 '15 at 19:43
  • 1
    I apologize, I forgot to use the formatting for the variable name; have edited my answer. – Alex Tereshenkov Jun 17 '15 at 20:10

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