自学教程：python不等于运算符的具体使用

Python not equal operator returns True if two variables are of same type and have different values, if the values are same then it returns False.

如果两个变量具有相同的类型并且具有不同的值 ，则Python不等于运算符将返回True ；如果值相同，则它将返回False 。

Python is dynamic and strongly typed language, so if the two variables have the same values but they are of different type, then not equal operator will return True.

Python是动态的强类型语言，因此，如果两个变量具有相同的值，但它们的类型不同，则不相等的运算符将返回True 。

Python不等于运算符 (Python not equal operators)

Python 2示例 (Python 2 Example)

Let's see some examples of not-equal operator in Python 2.7.

我们来看一些Python 2.7中不等于运算符的示例。

$ python2.7Python 2.7.10 (default, Aug 17 2018, 19:45:58) [GCC 4.2.1 Compatible Apple LLVM 10.0.0 (clang-1000.0.42)] on darwinType "help", "copyright", "credits" or "license" for more information.>>> 10 <> 20True>>> 10 <> 10False>>> 10 != 20True>>> 10 != 10False>>> '10' != 10True>>>

Python 3示例 (Python 3 Example)

Here is some examples with Python 3 console.

这是Python 3控制台的一些示例。

$ python3.7Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 26 2018, 23:26:24) [Clang 6.0 (clang-600.0.57)] on darwinType "help", "copyright", "credits" or "license" for more information.>>> 10 <> 20  File "<stdin>", line 1    10 <> 20        ^SyntaxError: invalid syntax>>> 10 != 20True>>> 10 != 10False>>> '10' != 10True>>>

We can use Python not equal operator withf-strings too if you are using Python 3.6 or higher version.

如果您使用的是Python 3.6或更高版本，我们也可以将Python不等于运算符与f字符串一起使用。

x = 10y = 10z = 20 print(f'x is not equal to y = {x!=y}') flag = x != zprint(f'x is not equal to z = {flag}') # python is strongly typed languages = '10'print(f'x is not equal to s = {x!=s}')

Output:

输出：

x is not equal to y = False
x is not equal to z = True
x is not equal to s = True

Python不等于自定义对象 (Python not equal with custom object)

When we use not equal operator, it calls __ne__(self, other) function. So we can define our custom implementation for an object and alter the natural output.

当我们使用不等于运算符时，它将调用__ne__(self, other)函数。 因此，我们可以为对象定义自定义实现并更改自然输出。

Let's say we have Data class with fields
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