(3) Formatted output

formatted output

format output

Ask the user to enter a username and age, then print the following format:

My name is xxx，my age is xxx.

很明显，用逗号进行字符串拼接，只能把用户输入的名字和年龄放到末尾，无法放到指定的xxx位置，而且数字也必须经过str(数字)的转换才能与字符串进行拼接。
这就用到了占位符，如：%s、%d

name= input('pls input your name: ')
age=input('pls input your age: ')
age=int(age)    #强制转换成整型
print('my name is %s my age is %s ' %(name,age))

Notice:

print('My name is %s,my age is %d' %(name,age))

age is a string type and cannot be passed to %d, so an error will be reported
print('my name is %s my age is %d ' %(name,int(age))) #Force character type conversion str-->int

Exercise: User enters name, age, job, hobbies, and prints it in the following format

------------ info of Egon -----------
Name  : Egon
Age   : 22
Sex   : male
Job   : Teacher 
------------- end -----------------

code

name= input('pls input your name: ')
age=input('pls input your age: ')
sex=input('pls input your sex :')
job=input('pls input your job :')

print('---------info of Bruce ------' '\n'
      'name  :' '%s'  '\n'
      'age   :' '%d'  '\n'
      'sex   :' '%s'  '\n'
      'job   :' '%s' '\n'
      "---------end-----------"
      %(name,int(age),sex,job)
)