NameError while using append on a list [Python]

Question

I'm trying to make a simple hangman game in Python 2.7.10. However when I try to append "_" for every letter in the word in a list. It throws:

Traceback (most recent call last):
File "C:\Users\Janek\Dropbox\python\vjesalo.py", line 82, in <module>
    append.wordlen(olo)
NameError: name 'append' is not defined

No idea why this happends because if I run in the python terminal

list = []
list.append("Bla bla bla")

It works just fine

Here is my code:

from sys import exit
from time import sleep

        word = raw_input("Enter a word: ")

        if word.isalpha() == True:
            word.lower()
        else:
            print "Invalid word!"
            sleep(3)
            exit()

        wordlen = []    
        for i in range(len(word)):
            append.wordlen("_")

        print wordlen

Answer 1

You have the call backwards

append.wordlen("_")

You meant

wordlen.append("_")