TypeError: 'builtin_function_or_method' object is not subscriptable

Question

elif( listb[0] == \"-test\"):
    run_all.set(\"testview\")
    listb.pop[0]

ERROR: Exception in Tkinter callback T

Answer 1

FYI, this is not an answer to the post. But it may help future users who may get the error with the message:

TypeError: 'builtin_function_or_method' object is not subscriptable

In my case, it was occurred due to bad indentation.

Just indenting the line of code solved the issue.