Python中POP()的区别

1 >>> help(list.pop)
2 Help on method_descriptor:
3 
4 pop(...)
5     L.pop([index]) -> item -- remove and return item at index (default last).
6     Raises IndexError if list is empty or index is out of range.

1 >>> help(dict.pop)
2 Help on method_descriptor:
3 
4 pop(...)
5     D.pop(k[,d]) -> v, remove specified key and return the corresponding value.
6     If key is not found, d is returned if given, otherwise KeyError is raised

1 >>> help(set.pop)
2 Help on method_descriptor:
3 
4 pop(...)
5     Remove and return an arbitrary set element.
6     Raises KeyError if the set is empty.