I have a set of shapefiles that need a new field adding to them called "Policy_Ref". I then need to update this field with the shapefile name. However when I do, it uses the full title, including the .shp. However I do not want the .shp in the fields. This is my code so far:

import arcpy
arcpy.workspace.env = r"teamGIS/shp"
fcs = arcpy.ListFeatureClasses()
for fc in fcs:
    arcpy.AddField_management(fc, "Policy_Ref", "TEXT")
    arcpy.CalculateField_management(fc, "Policy_Ref", "'" + fc + "'")
    arcpy.Merge_management(fcs, "new_shp")

How do I remove the .shp either before or after the code is executed?

2 Answers 2


Or you could use a describe and .baseName

    fcs = arcpy.ListFeatureClasses("","","")
    for fc in fcs:
            desc = arcpy.Describe(fc)
            print fc
            print desc.baseName
            ActualName = desc.baseName

This is really a Python rather than ArcPy question, so would be best researched at Stack Overflow.

However, you can try changing:

arcpy.CalculateField_management(fc, "Policy_Ref", "'" + fc + "'")


arcpy.CalculateField_management(fc, "Policy_Ref", "'" + fc.replace(".shp","") + "'")
  • 1
    my personal favorite is fcName,fcExt = os.path.splitext(fc).. this way if there is no extension fcExt == '' but fcName always contains the name; this function also has tolerance for double extensions (eg. MyShp.tif.shp). Commented Jun 26, 2015 at 3:39

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