topic Using wildcards with Cursors in Python Questions

Using wildcards with Cursors

JasonTaylor — Mon, 25 Jul 2011 21:06:50 GMT

Can anyone help me place a wildcard where I have an asterisk for '*a' and '*b'? I know this code isn't right, almost got it though.

import arcpy

PATCH_MASTER = "C:\\PATCHES\\PATCH_MASTER.shp"

rows = arcpy.UpdateCursor(PATCH_MASTER)

for row in rows:
    if row.PATCH_CODE == '*a' or row.PATCH_CODE == '*b':
        if row.FID_PATCH_ <= 8:
            row.PATCH_CODE = date_code + "00" + str(row.FID_PATCH_ + 1)
            rows.updateRow(row)
        elif row.FID_PATCH_ <= 98 and row.FID_PATCH_ >= 8:
            row.PATCH_CODE = date_code + "0" + str(row.FID_PATCH_ + 1)
            rows.updateRow(row)
        else:
            row.PATCH_CODE = date_code + str(row.FID_PATCH_ + 1)
            rows.updateRow(row)

del row
del rows

Thanks!

Re: Using wildcards with Cursors

Luke_Pinner — Sun, 12 Dec 2021 05:44:43 GMT

Simple answer - you can't use wildcards for python string comparisons, use something like:

#assuming you are checking the LAST character for 'a' or 'b'...
if row.PATCH_CODE[-1] in ['a','b']:

Complicated answer - you can use wildcards for python string comparisons if you use regular expressions - http://docs.python.org/library/re.html

Re: Using wildcards with Cursors

JasonTaylor — Tue, 26 Jul 2011 14:36:15 GMT

Very cool, thanks for the response. I had a feeling it wasn't straight forward. The work around makes total sense. Thanks again!