Detailed explanation of the basic data types of variables in Python if and while statements

This article explains in detailPythonVariablesBasicData types if、whileStatement

Variable name: can only be composed of numbers, letters, and underscores and cannot start with a number; variable names cannot be python internal keywords

Basic data types: numbers, String, Boolean value (True/False)

[if conditional statement]

if condition:

                                                                                                                   

Else

: code block

## counter Conditions 1:

code block

Elif condition 2:

Code block

elif condition three:

Code block

else:

Code block

[Simple

User Login

Program]

name = input("Username:")
pwd = input("Password:")

if name == "zjw" and pwd == "123"
    print('yes')
else:
    print('no')

[while loop

Statement]

while condition:

                  Code block

【Example】

【Output all positive

integers within 10

】

import time
 
n = 1
flag = True
while flag:
     print(n)
     if n ==10:
          flag == False
     n=n+1
     time.sleep(1)
print("end")

【break

] Used to jump out of the current loop, and the code below break will no longer be executed

n =  1
while True:
     print(n)
     if n ==10:
          break
n=n+1

[continue

] Used to jump out of this loop and continue the next loop

while True:
     print("123") 
         continue
     print("456")

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