operator.not_()函数 (operator.not_() Function)

operator.not_() function is a library function of operator module, it is used to perform "NOT operation" on a given value and returns True if the given value is zero or any falsy value, False, otherwise.

operator.not_()函数是运营商模块的库函数，它被用于如果给定的值是零或任何falsy值， 假上的给定值并返回true执行“NOT操作”，否则。

Module:

模块：

    import operator

Syntax:

句法：

    operator.not_(x)

Parameter(s):

参数：

• x – value on which NOT operation to be performed.

  x-要对其执行NOT操作的值。

Return value:

返回值：

The return type of this method is bool, it returns True if x is zero or any falsy value, False, otherwise.

此方法的返回类型为布尔 ，如果x是零或任何falsy值， 假返回true，否则。

Example:

例：

# Python operator.not_() Function Example
import operator
print("operator.not_(True):", operator.not_(True))
print("operator.not_(False):", operator.not_(False))
print()
x = 1
print("x:", x)
print("operator.not_(x):", operator.not_(x))
print()
x = 10
print("x:", x)
print("operator.not_(x):", operator.not_(x))
print()
x = -10
print("x:", x)
print("operator.not_(x):", operator.not_(x))
print()
x = 0
print("x:", x)
print("operator.not_(x):", operator.not_(x))
print()
x = "Hello"
print("x:", x)
print("operator.not_(x):", operator.not_(x))
print()
x = ""
print("x:", x)
print("operator.not_(x):", operator.not_(x))
print()

Output:

输出：

operator.not_(True): False
operator.not_(False): True
x: 1
operator.not_(x): False
x: 10
operator.not_(x): False
x: -10
operator.not_(x): False
x: 0
operator.not_(x): True
x: Hello
operator.not_(x): False
x:
operator.not_(x): True

翻译自: https://www.includehelp.com/python/operator-not_-function-with-examples.aspx