https://community.esri.com/t5/data-loading-tools-questions/will-custom-functions-in-user-py-be-listed-in-the/m-p/1652094#M227 <P>You can also manually add the function name to the hidden lookup sheet.</P><P>Right click the tabs and select unhide</P><P>select -Lookup-</P><P>scroll to the bottom and add your function, in my example, I added create_foo()</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="MikeMillerGIS_0-1758547188311.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/140767iB0E65856EA4FF5C0/image-size/medium?v=v2&amp;px=400" role="button" title="MikeMillerGIS_0-1758547188311.png" alt="MikeMillerGIS_0-1758547188311.png" /></span></P><P>&nbsp;</P> Mon, 22 Sep 2025 13:20:11 GMT MikeMillerGIS 2025-09-22T13:20:11Z https://community.esri.com/t5/data-loading-tools-questions/will-custom-functions-in-user-py-be-listed-in-the/m-p/1652010#M225 <P>When adding new functions to the user.py file, should the functions appear as a list in the Expression column, similar to how the base.py functions appear?</P> Sun, 21 Sep 2025 13:34:40 GMT https://community.esri.com/t5/data-loading-tools-questions/will-custom-functions-in-user-py-be-listed-in-the/m-p/1652010#M225 GISP00 2025-09-21T13:34:40Z https://community.esri.com/t5/data-loading-tools-questions/will-custom-functions-in-user-py-be-listed-in-the/m-p/1652075#M226 <P>You will need to run Update Data Loading Workspace.&nbsp; This will create a new workspace and add any user functions to the dropdown.</P> Mon, 22 Sep 2025 11:12:02 GMT https://community.esri.com/t5/data-loading-tools-questions/will-custom-functions-in-user-py-be-listed-in-the/m-p/1652075#M226 MikeMillerGIS 2025-09-22T11:12:02Z https://community.esri.com/t5/data-loading-tools-questions/will-custom-functions-in-user-py-be-listed-in-the/m-p/1652094#M227 <P>You can also manually add the function name to the hidden lookup sheet.</P><P>Right click the tabs and select unhide</P><P>select -Lookup-</P><P>scroll to the bottom and add your function, in my example, I added create_foo()</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="MikeMillerGIS_0-1758547188311.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/140767iB0E65856EA4FF5C0/image-size/medium?v=v2&amp;px=400" role="button" title="MikeMillerGIS_0-1758547188311.png" alt="MikeMillerGIS_0-1758547188311.png" /></span></P><P>&nbsp;</P> Mon, 22 Sep 2025 13:20:11 GMT https://community.esri.com/t5/data-loading-tools-questions/will-custom-functions-in-user-py-be-listed-in-the/m-p/1652094#M227 MikeMillerGIS 2025-09-22T13:20:11Z