CODEWITHSUNDEEP
pythonobjecttkintertypeerrorbuilt-in
Ani
Ani

Reputation: 1018

TypeError: 'builtin_function_or_method' object is not subscriptable

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

ERROR: Exception in Tkinter callback Traceback (most recent call last): File "/tools/python/2.7.2/lib/python2.7/lib-tk/Tkinter.py", line 1410, in call return self.func(*args) File "./edit.py", line 581, in populate listb.pop[0] TypeError: 'builtin_function_or_method' object is not subscriptable

The line # 581 is represented by last pop statement in the code above. run_all is a StringVar.

Why am I getting this error and how can it be solved?

Upvotes: 63

Views: 502309

Answers (8)

Super Kai - Kazuya Ito
Super Kai - Kazuya Ito

Reputation: 1

I got the same error below:

TypeError: 'builtin_function_or_method' object is not subscriptable

Because I used [] instead of () with pop as shown below:

lists = [['apple', 'orange'], ['lemon', 'kiwi']]

print(lists.pop[0]) # Error
               ↑ ↑

So, I replaced [] with () as shown below, then the error was solved:

lists = [['apple', 'orange'], ['lemon', 'kiwi']]

print(lists.pop(0)) # ['apple', 'orange']
               ↑ ↑

In addition, I could get apple and lemon with the code below:

lists = [['apple', 'orange'], ['lemon', 'kiwi']]

print(lists.pop(0)[0]) # apple
print(lists.pop(0)[0]) # lemon

Upvotes: 3

Konstantin Grigorov
Konstantin Grigorov

Reputation: 1602

Can't believe this thread was going on for so long. You would get this error if you got distracted and used [] instead of (), at least my case.

Pop is a method on the list data type, https://docs.python.org/2/tutorial/datastructures.html#more-on-lists

Therefore, you shouldn't be using pop as if it was a list itself, pop[0]. It's a method that takes an optional parameter representing an index, so as Tushar Palawat pointed out in one of the answers that didn't get approved, the correct adjustment which will fix the example above is:

listb.pop(0)

If you don't believe, run a sample such as:

if __name__ == '__main__':
  listb = ["-test"]
  if( listb[0] == "-test"):
    print(listb.pop(0))

Other adjustments would work as well, but it feels as they are abusing the Python language. This thread needs to get fixed, not to confuse users.

Addition, a.pop() removes and returns the last item in the list. As a result, a.pop()[0] will get the first character of that last element. It doesn't seem that is what the given code snippet is aiming to achieve.

Upvotes: 10

Quantum Prophet
Quantum Prophet

Reputation: 445

Mad a similar error, easy to fix: 

    TypeError Traceback (most recent call last) <ipython-input-2-1eb12bfdc7db> in <module>
  3 mylist = [10,20,30] ----> 4 arr = np.array[(10,20,30)] 5 d = {'a':10, 'b':20, 'c':30} TypeError: 'builtin_function_or_method' object is not subscriptable

but I should have written it as:

arr = np.array([10,20,30])

Very fixable, rookie/dumb mistake.

Upvotes: 1

Bhojendra Rauniyar
Bhojendra Rauniyar

Reputation: 85545

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.

Upvotes: 1

Aamir M Meman
Aamir M Meman

Reputation: 1831

Looks like you typed brackets instead of parenthesis by mistake.

Upvotes: 55

Tushar Palawat
Tushar Palawat

Reputation: 39

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.

Upvotes: 3

srgerg
srgerg

Reputation: 19329

I think you want

listb.pop()[0]

The expression listb.pop is a valid python expression which results in a reference to the pop method, but doesn't actually call that method. You need to add the open and close parentheses to call the method.

Upvotes: 72

c0m4
c0m4

Reputation: 4443

You are trying to access pop as if was a list or a tupple, but pop is not. It's a method.

Upvotes: 6

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