Format the python string and format the python string.

Format the python string and format the python string.

Most of the time, when printing input content, we want a simple format instead of splicing.

General Practice:

1 name = input("name:").strip()2 age = input("age:").strip()3 job = input("job:").strip()4 print("Name:" + name + " Age:" + age + " Job:" + job)

Result:

Name:zhang Age:24 Job:IT

Format the output:

Name = input ("name :"). strip () age = input ("age :"). strip () job = input ("job :"). strip () info = ''' ---------- info of % s ------- # Every % s in info is a placeholder Name: % sAge: % sJog: % s ---------- end --------------- ''' % (name, name, age, job) # % of this line is to associate the placeholder with the variable following the brackets with print (info)

Result:

----------info of zhang -------Name :  zhangAge :   24Jog :   IT----------end---------------

In addition to % s, there are % d. % d indicates that you can only enter numbers. We will change % s of age to % d to see what will happen.

 1 name = input("name:").strip() 2 age = input("age:").strip() 3 job = input("job:").strip() 4 info = ''' 5 ----------info of %s ------- 6 Name :  %s 7 Age :   %d 8 Jog :   %s 9 ----------end---------------10 '''%(name, name, age, job)11 print(info)

Error message:

Traceback (most recent call last):  File "C:/Users/admin/PycharmProjects/test.py", line 10, in <module>    '''%(name, name, age, job)TypeError: %d format: a number is required, not strName:li Age:25 Job:farmer

The reason is that the input is a number but saved to the variable as a string 'str' type. To use % d, you must modify the variable type, you can change the age variable of row 10th to the int type as follows to run the command normally.

'''%(name, name, int(age), job)

Therefore, in formatting output, % s is more omnipotent, Because you input a string 'str', so no error is reported.