Arithmetic operators and comparison operators for basic learning in Python

In recent years, as the popularity of Python in the Internet industry has only increased, many people are learning Python, but if they want to truly learn it well, they must lay a good foundation. The main content of this article is about Python's arithmetic operators and comparison operators, with sample code explanations. Interested friends can learn about it.

Arithmetic operators

##OperatorsDescriptionExampleAdd - Add two objectsa b Output result 31##- */Power - Return x raised to the y powerTake integer division - return the integer part of the quotientExample code:

#!/usr/bin/python3
a = 21
b = 10
c = 0
c = a + b
print ("1 - c 的值为：", c)
c = a - b
print ("2 - c 的值为：", c)
c = a * b
print ("3 - c 的值为：", c)
c = a / b
print ("4 - c 的值为：", c)
c = a % b
print ("5 - c 的值为：", c)
# 修改变量 a 、b 、c
a = 2
b = 3
c = a**b 
print ("6 - c 的值为：", c)
a = 10
b = 5
c = a//b 
print ("7 - c 的值为：", c)

The above example output result: Comparison operatorThe following assumes that variable a is 10 and variable b is 20:

Subtract - Get a negative number or subtract one number from another number	a - b Output result-11
Multiplication - Multiply two numbers or return a string repeated several times	a * b Output result 210
Division- b % a Output result 1		**
a**b is 10 raised to the 21st power		//
9//2 Output result 4, 9.0//2.0 Output result 4.0
1 - c 的值为： 31 2 - c 的值为： 11 3 - c 的值为： 210 4 - c 的值为： 2.1 5 - c 的值为： 1 6 - c 的值为： 8 7 - c 的值为： 2

Operator

DescriptionExample

====Equal - Compare whether the objects are equalNot equal to - Compares whether two objects are not equalGreater than - Returns whether x is greater than yLess than - Returns whether x is less than y. All comparison operators return 1 for true and 0 for false. These are equivalent to the special variables True and False respectively. Note the capitalization of these variable names. Greater than or equal to - Returns whether x is greater than or equal to y. Less than or equal to - Returns whether x is less than or equal to y. The following examples demonstrate the operation of all comparison operators in Python:

#!/usr/bin/python3
a = 21
b = 10
c = 0
if ( a == b ):
   print ("1 - a 等于 b")
else:
   print ("1 - a 不等于 b")

if ( a != b ):
   print ("2 - a 不等于 b")
else:
   print ("2 - a 等于 b")

if ( a < b ):
   print ("3 - a 小于 b")
else:
   print ("3 - a 大于等于 b")

if ( a > b ):
   print ("4 - a 大于 b")
else:
   print ("4 - a 小于等于 b")
# 修改变量 a 和 b 的值
a = 5;
b = 20;
if ( a <= b ):
   print ("5 - a 小于等于 b")
else:
   print ("5 - a 大于  b")
if ( b >= a ):
   print ("6 - b 大于等于 b")
else:
   print ("6 - b 小于 b")

The output results of the above examples:

(a == b) Return False.		!=
(a != b) Returns true.		>
(a > b) Returns False.		<
(a < b) returns true.		>=
(a >= b) Returns False.		<=
(a <= b) returns true.
1 - a 不等于 b 2 - a 不等于 b 3 - a 大于等于 b 4 - a 大于 b 5 - a 小于等于 b 6 - b 大于等于 b Related tutorials:	Python3 video tutorial

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