登录系统 （函数封装）
import File_operation
def register():
while True:
reg_id = input('请输入注册名字(3-6位)：')
if 3 < len(reg_id) < 6:
break
else:
print('注册有误，请重试')
while True:
reg_pa = input('请输入密码(6-12位)：')
if 6 < len(reg_pa) < 12:
break
else:
print('密码输入有误，请重试')
res = File_operation.file_json_r('file/stu_info.json')
if not res:
res = {}
elif reg_id in res:
print('这个ID 已经被注册')
return
else:
res[reg_id] = reg_pa
File_operation.file_json_w('file/stu_info.json', res)
print('注册成功')
def login():
name = input('请输入你的名字：')
pass_word = input('请输入你的密码：')
re = File_operation.file_json_r('stu_info.json')
if name in re:
if re[name] == pass_word:
print('登录成功')
else:
print('密码错误')
elif not re:
print('登录失败，账号没有注册')
else:
print('登录失败')
def show_main_page():
while True:
re = File_operation.file_open('file/login_interface')
print(re)
choose = input('Please select number:')
if choose == '1':
login()
elif choose == '2':
register()
else:
break
if __name__ == '__main__':
show_main_page()
