Searchcursor Inside UpdateCursor

[AbhishekOjha]

Hi, I am new to arcpy and trying to automate one of my daily task.

i want to use Searchcursor Inside UpdateCursor for multiple fc look through. I want to update MPK field form CP fc based on Mains and Service fc. please help.

Thank you in advance.

[Luke_Pinner · Accepted solution]

Don't nest Cursors. Build a dict with a da.SearchCursor, then refer to that dict in your da.UpdateCursor loop. Here are plenty of examples:

Turbo Charging Data Manipulation with Python Cursors and Dictionaries

[AbhishekOjha]

Thank you, I'll try that.