1.3 KiB
1.3 KiB
| title | localeTitle |
|---|---|
| Python Bool Function | Python Bool函数 |
bool()是Python 3中的内置函数。此函数返回一个布尔值，即True或False。它需要一个参数， x 。
参数
它需要一个参数x 。使用标准真值测试程序转换x 。
返回值
如果x为false或省略，则返回False ;否则返回True 。
代码示例
print(bool(4 > 2)) # Returns True as 4 is greater than 2
print(bool(4 < 2)) # Returns False as 4 is not less than 2
print(bool(4 == 4)) # Returns True as 4 is equal to 4
print(bool(4 != 4)) # Returns False as 4 is equal to 4 so inequality doesn't holds
print(bool(4)) # Returns True as 4 is a non-zero value
print(bool(-4)) # Returns True as -4 is a non-zero value
print(bool(0)) # Returns False as it is a zero value
print(bool('dskl')) # Returns True as the string is a non-zero value
print(bool([1, 2, 3])) # Returns True as the list is a non-zero value
print(bool((2,3,4))) # Returns True as tuple is a non-zero value
print(bool([])) # Returns False as list is empty and equal to 0 according to truth value testing