Python中的运算符函数用法详细介绍|S1 _Python运算符函数

Python在模块"operator"下具有用于许多数学, 逻辑, 关系, 按位等操作的预定义函数。本文介绍了一些基本功能。
1. add(a, b):-这个函数返回给定参数的添加。
运算- a + b。
sub(a, b):-这个函数返回给定参数的差值。
操作- a - b。
3.mul(a, b):-这个函数返回给定参数的乘积。
操作- a * b。

# Python code to demonstrate working of # add(), sub(), mul()# importing operator module import operator# Initializing variables a = 4b = 3# using add() to add two numbers print ( "The addition of numbers is :" , end = ""); print (operator.add(a, b))# using sub() to subtract two numbers print ( "The difference of numbers is :" , end = ""); print (operator.sub(a, b))# using mul() to multiply two numbers print ( "The product of numbers is :" , end = ""); print (operator.mul(a, b))

输出如下：

The addition of numbers is :7 The difference of numbers is :1 The product of numbers is :12

4. truediv(a,b):-这个函数返回给定参数的分割。
操作- a / b。
5. floordiv(a,b):-这个函数还返回给定参数的分割。但该值是最小值，即返回最大的小整数。
操作- a // b。
6. pow(a,b):-这个函数返回给定参数的取幂。
操作- a ** b。
7. mod(a,b):-这个函数返回给定参数的模数。
操作- a % b。

# Python code to demonstrate working of # truediv(), floordiv(), pow(), mod()# importing operator module import operator# Initializing variables a = 5b = 2# using truediv() to divide two numbers print ( "The true division of numbers is : " , end = ""); print (operator.truediv(a, b))# using floordiv() to divide two numbers print ( "The floor division of numbers is : " , end = ""); print (operator.floordiv(a, b))# using pow() to exponentiate two numbers print ( "The exponentiation of numbers is : " , end = ""); print (operator. pow (a, b))# using mod() to take modulus of two numbers print ( "The modulus of numbers is : " , end = ""); print (operator.mod(a, b))

输出如下：

The true division of numbers is : 2.5 The floor division of numbers is : 2 The exponentiation of numbers is : 25 The modulus of numbers is : 1

8. lt(a, b):—这个函数用于检查a是否小于b。如果a小于b则返回true，否则返回false。
操作- a < b。
9. le(a, b):-这个函数用于检查a是否小于或等于b。如果a小于或等于b则返回true，否则返回false。
操作- a < = b。
10. eq(a, b):-这个函数用于检查a是否等于b。如果a等于b则返回true，否则返回false。

# Python code to demonstrate working of # lt(), le() and eq()# importing operator module import operator# Initializing variables a = 3b = 3# using lt() to check if a is less than b if (operator.lt(a, b)): print ( "3 is less than 3" ) else : print ( "3 is not less than 3" )# using le() to check if a is less than or equal to b if (operator.le(a, b)): print ( "3 is less than or equal to 3" ) else : print ( "3 is not less than or equal to 3" )# using eq() to check if a is equal to b if (operator.eq(a, b)): print ( "3 is equal to 3" ) else : print ( "3 is not equal to 3" )

输出如下：

3 is not less than 3 3 is less than or equal to 3 3 is equal to 3

11. gt(a,b):-这个函数用来检查a是否大于b。如果a大于b则返回true，否则返回false。
操作- a > b。
12. ge(a,b):—该函数用于检查a是否大于等于b。如果a大于或等于b则返回true，否则返回false。
操作- a > = b。
13. ne(a,b):—该函数用于检查a是否等于b或是否相等。如果a不等于b则返回true，否则返回false。
操作- a != b

# Python code to demonstrate working of # gt(), ge() and ne()# importing operator module import operator# Initializing variables a = 4b = 3# using gt() to check if a is greater than b if (operator.gt(a, b)): print ( "4 is greater than 3" ) else : print ( "4 is not greater than 3" )# using ge() to check if a is greater than or equal to b if (operator.ge(a, b)): print ( "4 is greater than or equal to 3" ) else : print ( "4 is not greater than or equal to 3" )# using ne() to check if a is not equal to b if (operator.ne(a, b)): print ( "4 is not equal to 3" ) else : print ( "4 is equal to 3" )

输出如下：