topic Re: How to remove a character from Drawing order layer name using arcpy? in ArcGIS Pro Questions

How to remove a character from Drawing order layer name using arcpy?

Davec43 — Tue, 01 Aug 2023 16:34:29 GMT

I have a script that creates a geodatabase and then splits a layer by its name into that geodatabase. The problem is if the layer name starts with a number "123" it'll add a "t" to the beginning of the layer name. How do I strip the "t" from the drawing order using arcpy?

Re: How to remove a character from Drawing order layer name using arcpy?

RichlandGIS — Tue, 01 Aug 2023 19:44:07 GMT

That is probably because you are not allowed to have geodatabase feature class name starting with a number.

Re: How to remove a character from Drawing order layer name using arcpy?

AngelaSchirck — Wed, 02 Aug 2023 13:32:48 GMT

Not exactly sure what you're trying to do, but to get rid of a leading t in python:

string = "t123abc"

newstring = string[1:] //newstring will be everything but the first character of the original string

Re: How to remove a character from Drawing order layer name using arcpy?

Davec43 — Wed, 02 Aug 2023 14:37:55 GMT

Here's a snippet of a portion of the output. Since the layer starts with a number, arc adds a "T". I'm trying to script removal of all the "T's" since it can be tedious manually removing all of them.

When I try this:

import arcpy Map_name = map1 aprx = arcpy.mp.ArcGISProject("CURRENT") act_map = aprx.activeMap map = aprx.listMaps(Map_name) layer = act_map.listLayers() for lyr in layer: string = lyr[1:]

I get:

Traceback (most recent call last):
File "<string>", line 8, in <module>
TypeError: 'Layer' object is not subscriptable

Re: How to remove a character from Drawing order layer name using arcpy?

RichlandGIS — Wed, 02 Aug 2023 14:56:00 GMT

lyr is a Layer class, need to grab the layer name from it as string. Think this is what you are looking for:

for lyr in layer: string = lyr.name[1:]

Though, you will still get an error if you try to save them with a name starting with a number in a geodatabase.

Re: How to remove a character from Drawing order layer name using arcpy?

Davec43 — Wed, 02 Aug 2023 15:12:29 GMT

I see what you're saying. I found this from stack exchange and it'll strip the first character from Layer names if they don't have a number as their second character.

fcs = arcpy.ListFeatureClasses() for fc in fcs: Arcpy.Rename_management(fc,fc[1:])

When I try it with a T123... I get

ERROR 000354: The name contains invalid characters
Failed to execute (Rename).

I'm assuming there isn't going to be a way around this?

Re: How to remove a character from Drawing order layer name using arcpy?

RichlandGIS — Wed, 02 Aug 2023 15:41:32 GMT

Unless you want to export them to shapefiles (which do allow filenames to start with numbers) you will run into that error.

You could use something like:

string = '_' + lyr.name[1:]

which would replace the 't' with and underscore which will allow you to save them in geodatabase.

Re: How to remove a character from Drawing order layer name using arcpy?

Davec43 — Wed, 02 Aug 2023 15:44:45 GMT

Thats how I'll have to do it. Thanks!