booleanの確認
#!/usr/bin/env python3 # False is False print("False:\t",bool(False)) # True is True print("True:\t",bool(True)) # 0 is False print("0:\t",bool(0)) # 1.. is True print("1:\t",bool(1)) # -1.. is True print("-1:\t",bool(-1)) # None is False print("None:\t",bool(None))
$./test.py False: False True: True 0: False 1: True -1: True None: False
