stackoverflow
的解释
list.append
mutates
the list itself and returns None
.
List comprehensions are for storing the result, which isn't what you want in this case if you want to just change the original lists.
stackoverflow 的解释
stackoverflow
的解释
list.append
mutates
the list itself and returns None
.
List comprehensions are for storing the result, which isn't what you want in this case if you want to just change the original lists.
stackoverflow 的解释