python 布爾值 bool( ) 與邏輯運算符

邏輯運算符

not

and

or

運算符優先級

not > and >or

printer(x or y)  x為非零，則返回x，否則返回y

print(1 or 2)
print(3 or 2)
print(0 or 1)
print(0 or 3)

#打印結果
1
3
1
3

printer(x and y)  x為非零，則返回y，x為零，則返回x

print(1 and 2)

print(0 and 2)

print(2 and 3)

#運行結果

2

0

3

數字轉換布爾值

print(bool(1))

print(bool(0))

print(bool(2))

#運行結果

True

False

True