Python Notes (1) - Print Output

First, the output statement input output statement print

　　Example: user input

1 username = input( " username: " )
 2  #characters displayed in the variable name 
3 password = input( " password:) 
4  print (username,password)

2. Formatted output

　　Example: Introduction

1 name = input( " name: " )          #Character type 2 age = input( " age: " )      
 3 print (type(age))                #View the type of age typ() output type 4 jop = input( " jop: " )
 5 salary = input( " salary: " )
 

 　　Note: The type obtained from the input is a character type, so what age gets is a character, not a value ; if age gets a value, the type should be converted.

1 age = int(input( " age: " ))    # age is an integer

　　Four ways to format output

1. concatenation of strings

 

1 info1 = """         
2 ------------info1 of """ +name+ '''------
3 Name:''' +name+ """
4 Age:""" +age+ '''
5 Jop:''' +jop+ """
6 Salary:""" +salary
7 print(info1)

　　# String concatenation can only be used for characters
　　# You can use ''' ''' or """ """ for multi-line output, info1 has been written in two ways

　　2. #placeholder %s character type, %d decimal integer type, %f floating point type

1 info2= ''' 
2  ---------info2 of %s------
 3  Name:%s
 4  Age:%s
 5  Jop:%s
 6  Salary:%s
 7  ''' %(name,name,age,jop,salary)    #Write 8 in output order 
print (info2) 

　　3. Use .format()

1 info3 = """ 
2  -----------info3 of {name2}-------
 3  Name:{name2}
 4  Age:{age2}
 5  Jop:{jop2}
 6  Salary :{salary2}
 7  """ .format(name2=name,age2=age,jop2=jop,salary2=salary) #Can be   understood as an array 
8  print (info3)

　　4.

1 info4 = """
2 -----------info4 of {0}-------
3 Name:{0}
4 Age:{1}
5 Jop:{2}
6 Salary:{3}
7 """.format(name,age,jop,salary)
8 print(info4)

3. Operation results