Python 在字符串中加入变量的实例讲解

有时候，我们需要在字符串中加入相应的变量，以下提供了几种字符串加入变量的方法：

1、+ 连字符

name = 'zhangsan'
print('my name is '+name)

#结果为 my name is zhangsan

2、％ 字符

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))

结果为

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

3、format()函数

对于变量较多的情况，加入加'+'或者'％'相对比较麻烦，这种情况下可以使用format函数

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)

结果为：

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

来源：https://blog.csdn.net/qq_26033611/article/details/79224565