用户交互，格式化输出

用户交互

input（输入）

name = input('请输入你的名字：')
pwd = input（'请输入你的密码：'）
print(type(name))
print(type(pwd))

通过input输入的任何类型的值都会转变成数字串类型（str）

格式化输出

占位符

# %s
name = 'xiaoming'
age = 18
print('my name is %s ,my age is %s'%(name,age))

format格式化

name = 'xiaoming'
age = 18
print('my name is {},my age is {}'.format(name,age))
print('my name is {1},my age is {0}'.format(age,name))

f_String格式化

name = 'xiaoming'
age = 18
print(f'my name is {name},my age is {age}')
print(f'my name is {name},my age is {age+1}')
print(f'{age:.2f}')