Python 在字符串中加入变量的实例讲解

name = 'zhangsan' print('my name is '+name)  #结果为 my name is zhangsan 

name = 'zhangsan' age = 25 price = 4500.225 print('my name is %s'%(name)) print('i am %d'%(age)+' years old') print('my price is %f'%(price)) #保留指定位数小数(四舍五入) print('my price is %.2f'%(price)) 

my name is zhangsan i am 25 years old my price is 4500.225000 my price is 4500.23 

name = 'zhangsan' age = 25 price = 4500.225 info = 'my name is {my_name},i am {my_age} years old,my price is {my_price}'/  .format(my_name=name,my_age=age,my_price=price) print(info) 

my name is zhangsan,i am 25 years old,my price is 4500.225