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

This error arises when you don't use brackets with pop operation. Write the code in this manner.

listb.pop(0)

This is a valid python expression.