python-day1-if else 流程判断

#Author:Xk Lu

#密文
import getpass

_username='lxk'
_password='aaa'
username =input("username:")
password=getpass.getpass("password:")
# password=input("password:")
print(username,password)
if _username==username and _password==password:
    print('welcome user{name} login ...'.format(name=username))
else:
    print('Invalid username or password !')

python 强制缩进  结构缩进

缩进错误

#Author:Xk Lu
_age=56

age=int(input("age:"))
if age==_age:
    print("you got it!")
elif age>_age:
    print("think smaller ...")
else:
    print("think bigger...")