Why is this wrong

Question

#this doesn't work, why not?
list = [a,b,c,d]
list = list.append(e)
print(list)

#instead this works, why?
list = [a,b,c,d]
list.append(e)
print(list)

Answer 1

list.append returns None. The method modifies the list inplace.

https://docs.python.org/3/tutorial/datastructures.html

Answer 2

1. None of them should work, a is a variable, and "a" is a string, maybe you meant "a", "b"... ?

2. The first one is the correct one, what problems did you have when running the code?

Answer 3

On the line list = list.append(e) you are trying to create a string containing the value of list.append(e) whereas list.append is the correct syntax for adding a value to a list.