python | 运算符 | 逻辑运算符

Posted 2020-10-20 yuzhen233

 1 # encoding: utf-8
 2 
 3 # None与0都为False
 4 print(bool(None))
 5 print(bool(0))
 6 
 7 # 短路运算符规则
 8 # 假与取左
 9 print(0 and 90)
10 
11 # 真或取左
12 print(90 or 43)
13 
14 # 假或取右
15 print(0 or 78)
16 
17 # 真与取右
18 print(78 and 89)