随机验证码
import random
b = ''
for i in range(5):
t = random.randrange(0, 9)
if t==3 or t==0:
y = random.randrange(0,9)
u1 = str(y)
else:
j = random.randrange(65,91)
u1 = chr(j)
b += u1
print (b)
文本登录验证
f = open('D:\E\semantic/yess.txt','r',encoding='utf-8')
def func_1(user_2,pwd_2):
for i in f:
i1 = i.strip()
i2 = i1.partition('$')
if user_2 == i2[0] and pwd_2 == i2[2]:
return True
return False
user_1 = input('请输入账号：')
pwd_1 = input('请输入密码')
f = func_1(user_1,pwd_1)
if f:
print('登录成功')
else:
print('失败')
文本登录验证升级版
f = open('D:\E\semantic/yess.txt','r',encoding='utf-8')
def func_1(user_3,pwd_3):
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if user_3 == i2[0] and pwd_3 == i2[2]:
return True
return False
print('欢迎登录美国联邦系统，登录请按1，注册请按2')
name = input('')
if name == '2':
isexit = False
while not isexit:
p = False
user_1 = input('请输入注册账号：')
for u in f:
u1 = u.strip()
u2 = u1.partition('&')
if user_1 == u2[0]:
p = True
break
if p:
f.seek(0)
print('账号已经存在')
continue
pwd_1 = input('请输入注册密码')
print('恭喜你注册成功，欢迎登录美国联邦系统：')
name_1 = '\n' + user_1 + '&' + pwd_1
f1 = open('D:\E\semantic/yess.txt','a',encoding='utf-8')
f1.write(name_1)
f1.flush()
f1.seek(0)
isexit = True
break
user_1 = input('请输入登录账号：')
pwd_1 = input('请输入登录密码')
r = func_1(user_1,pwd_1)
if r:
print('登录成功')
else:
print('失败')
函数版：
f = open('D:\E\semantic/yess.txt','r',encoding='utf-8')
def func_1(user_3,pwd_3):
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if user_3 == i2[0] and pwd_3 == i2[2]:
return True
return False
def Verify(user_name):
user_pwd = input('请输入注册密码：')
name = '\n' + user_name + '&' + user_pwd
f = open('D:\E\semantic/yess.txt','a',encoding='utf-8')
f.write(name)
f.flush()
Sign()
def register():
while True:
isexit = False
isexit_1 = False
user_2 = input('请输入注册账号：')
for u in f:
u1 = u.strip()
u2 = u1.partition('&')
if user_2 == u2[0]:
isexit = True
f.seek(0)
break
else:
isexit_1 = True
if isexit:
print('账号已经存在，请重新注册。')
continue
elif isexit_1:
f.seek(0)
Verify(user_2)
break
def Sign():
inp_1 = input('欢迎登录美国联邦系统，登录请按1，注册请按2.\n')
if inp_1 == '1':
user_1 = input('请输入登录账号：')
pwd_1 = input('请输入登录密码')
r = func_1(user_1,pwd_1)
if r:
print('登录成功')
else:
print('失败')
elif inp_1 == '2':
register()
Sign()
验证码版本：
import random
f = open('D:\E\semantic/yess.txt','r',encoding='utf-8')
def func_1(user_3,pwd_3):
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if user_3 == i2[0] and pwd_3 == i2[2]:
return True
return False
def Verify(user_name):
user_pwd = input('请输入注册密码：')
name = '\n' + user_name + '&' + user_pwd
f = open('D:\E\semantic/yess.txt','a',encoding='utf-8')
f.write(name)
f.flush()
Sign()
def register():
while True:
isexit = False
isexit_1 = False
user_2 = input('请输入注册账号：')
for u in f:
u1 = u.strip()
u2 = u1.partition('&')
if user_2 == u2[0]:
isexit = True
f.seek(0)
break
else:
isexit_1 = True
if isexit:
print('账号已经存在，请重新注册。')
continue
elif isexit_1:
f.seek(0)
Verify(user_2)
break
def yzm():
b = ''
for i in range(5):
t = random.randrange(0, 9)
if t==3 or t==0:
y = random.randrange(0,9)
u1 = str(y)
else:
j = random.randrange(65,91)
u1 = chr(j)
b += u1
return b
def Sign():
inp_1 = input('欢迎登录美国联邦系统，登录请按1，注册请按2.\n')
if inp_1 == '1':
y = yzm()
user_1 = input('请输入登录账号：')
pwd_1 = input('请输入登录密码')
print(y)
while True:
yzm_1 = input('请输入验证码')
yzm_2=yzm_1.upper()
if y == yzm_2:
break
else:
print('验证码错误')
r = func_1(user_1,pwd_1)
if r and y == yzm_2:
print('登录成功')
else:
print('登录失败用户名密码错误：')
elif inp_1 == '2':
register()
Sign()
函数升级版
#验证账号
def Sign_Sign(user_name):
f = open('D:\E\semantic/py.txt','r',encoding='utf-8')
f.seek(0)
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if user_name == i2[0]:
return True
return False
#验证密码
def pwd_pwd(user_pwd):
f = open('D:\E\semantic/py.txt','r',encoding='utf-8')
f.seek(0)
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if user_pwd == i2[2]:
return True
return False
#添加新密码
def modify_pwd(pwd_modify,pwd_r):
f = open('D:\E\semantic/py.txt','r',encoding='utf-8')
f.seek(0)
list_1 = []
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if pwd_modify == i2[0]:
name = pwd_modify + '&' + pwd_r + '\n'
list_1.append(name)
continue
list_1.append(i)
print(list_1)
f1 = open('D:\E\semantic/py.txt','a+',encoding='utf-8')
f1.seek(0)
f1.truncate()
for u in list_1:
f1.write(u)
f1.flush
print('yes')
#主
def Sign():
inp_1 = input('欢迎登录yellow网，登录请按1，注册请按2.修改密码请按3.\n')
isexit = False
#登录
if inp_1 == '1':
while not isexit:
user_1 = input('请输入登录账号：')
pwd_1 = input('请输入登录密码')
r = Sign_Sign(user_1)
print(r)
b = pwd_pwd(pwd_1)
print(b)
if r and b:
print('登录成功')
break
else:
print('用户名和密码错误，请重新输入：')
#注册
elif inp_1 == '2':
while not isexit:
user_1 = input('请输入注册账号：')
r = Sign_Sign(user_1)
if r:
print('账号已经存在')
continue
break
pwd_1 = input('请输入注册密码')
name = '\n' + user_1 + '&' + pwd_1
f = open('D:\E\semantic/py.txt','a+',encoding='utf-8')
f.write(name)
f.flush()
print('恭喜注册成功，请刷新登录')
Sign()
#修改密码
elif inp_1 == '3':
while not isexit:
user_1 = input('请输入登录账号：')
pwd_1 = input('请输入登录密码')
r = Sign_Sign(user_1)
b = pwd_pwd(pwd_1)
if r and b:
while not isexit:
pwd_s = input('请输入新密码：')
pwd_r = input('再次输入新密码')
if pwd_r == pwd_s:
modify_pwd(user_1,pwd_r)
Sign()
return
else:
print('两次密码不一致')
else:
print('用户名和密码错误，请重新输入：')
Sign()
函数验证码升级版 无bug：
import random
#验证账号
def Sign_Sign(user_name):
f = open('D:\E\semantic/py.txt','r',encoding='utf-8')
f.seek(0)
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if user_name == i2[0]:
return True
return False
#验证密码
def pwd_pwd(user_pwd):
f = open('D:\E\semantic/py.txt','r',encoding='utf-8')
f.seek(0)
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if user_pwd == i2[2]:
return True
return False
#添加新密码
def modify_pwd(pwd_modify,pwd_r):
f = open('D:\E\semantic/py.txt','r',encoding='utf-8')
f.seek(0)
list_1 = []
for i in f:
i1 = i.strip()
i2 = i1.partition('&')
if pwd_modify == i2[0]:
name = pwd_modify + '&' + pwd_r + '\n'
list_1.append(name)
continue
list_1.append(i)
f1 = open('D:\E\semantic/py.txt','a+',encoding='utf-8')
f1.seek(0)
f1.truncate()
for u in list_1:
f1.write(u)
f1.flush
#验证码
def vcation():
while True:
vcation_str = ''
for i in range(5):
t = random.randrange(0, 9)
if t==3 or t==0:
y = random.randrange(0,9)
u1 = str(y)
else:
j = random.randrange(65,91)
u1 = chr(j)
vcation_str += u1
print (vcation_str)
vcation_1 = input('请输入验证码：')
vcation_2 = vcation_1.upper()
if vcation_2 == vcation_str:
return True
print('验证码错误请重新输入：')
#主
def Sign():
inp_1 = input('欢迎登录yellow网，登录请按1，注册请按2.修改密码请按3.\n')
isexit = False
#登录
if inp_1 == '1':
while not isexit:
user_1 = input('请输入登录账号：')
pwd_1 = input('请输入登录密码')
vcation()
r = Sign_Sign(user_1)
b = pwd_pwd(pwd_1)
if r and b:
print('登录成功')
break
else:
print('用户名和密码错误，请重新输入：')
#注册
elif inp_1 == '2':
while not isexit:
user_1 = input('请输入注册账号：')
vcation()
r = Sign_Sign(user_1)
if r:
print('账号已经存在')
continue
break
pwd_1 = input('请输入注册密码')
name = '\n' + user_1 + '&' + pwd_1
f = open('D:\E\semantic/py.txt','a+',encoding='utf-8')
f.write(name)
f.flush()
print('恭喜注册成功，请刷新登录')
Sign()
#修改密码
elif inp_1 == '3':
while not isexit:
user_1 = input('请输入登录账号：')
pwd_1 = input('请输入登录密码')
vcation()
r = Sign_Sign(user_1)
b = pwd_pwd(pwd_1)
if r and b:
while not isexit:
pwd_s = input('请输入新密码：')
pwd_r = input('再次输入新密码')
vcation()
print('恭喜您已经成功修改密码')
if pwd_r == pwd_s:
modify_pwd(user_1,pwd_r)
Sign()
return
else:
print('两次密码不一致')
else:
print('用户名和密码错误，请重新输入：')
Sign()
文本登录与验证码系统
本文介绍了一种基于文本文件的用户登录验证系统，并逐步增加了注册功能及验证码验证，最后通过函数化进一步完善了系统的可用性和安全性。
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