第一课

info = '''
--------- info of %s ---------
账户：%s
密码：%s
余额：%d
''' % (username,username,password,remaining_sum)

info = '''
---------- info of {_name} ---------
name:{_name}
age:{_age}
job:{_job}
'''.format(_name=name,
           _age=age,
           _job=job)

print(info)

import getpass

password = getpass.getpass("密码：")

if _username == username and _password == password:
    print("Welcome user {name} login...".format(name=username))
else:
    print("Invalid username or password!")

sum = 100
count = 0

while count < 3:
    guess_sum = int(input("guess sum:"))
    if guess_sum == sum:
        print("Yes,you are right!")
        break
    elif guess_sum > sum:
        print("It's maybe smaller!")
    else:
        print("It's maybe bigger!")
    count +=1
else:
    print("You have lost the last change!")

for i in range(10):
    print(-------i)
    for j in range(10):
        if j == 5:
            break
        print(j)