auto save

2-4-diy1.py

+username = "python"
+userpassword = "123456"
+while True:
+name = input("请输入用户名:")
+password = input("请输入密码:")
+
+if name == username and password == userpassword:
+    print("登录成功!")
+    break

2-4-diy2.py

+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    print("用户名和密码错误!请重新输入")
+print("欢迎来到贝尔编程!")
\ No newline at end of file

2-4-diy3.py

+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    if name != username:
+        print("用户名不存在,请重新输入!")
+    if password != userpassword:
+        print("密码输入有误,请重新输入!")
+print("欢迎来到贝尔编程!")
\ No newline at end of file

2-4-diy4-2.py

+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    elif name != username:
+        print("用户名不存在,请重新输入!")
+    else:
+        print("密码输入有误,请重新输入!")
+print("欢迎来到贝尔编程!")
\ No newline at end of file

2-4-diy4.py

+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    if name != username:
+        print("用户名错误,请重新输入!")
+        continue
+    if password != userpassword:
+        print("密码输入有误,请重新输入!")
+print("欢迎来到贝尔编程!")
\ No newline at end of file

2-4-diy5.py

+i = 3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i -= 1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("用户名错误,请重新输入!")
+            continue
+        if password != userpassword:
+            print("密码输入有误,请重新输入!")
+    else:
+        print("你的账户已被锁定，请一个小时以后再来")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file

2-4-diy6.py

+i = 3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i -=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("用户名错误,请重新输入!")
+            print("温馨提示:您还有"+str(i)+"次登录机会")
+            continue
+        if password != userpassword:
+            print("密码输入有误,请重新输入!")
+            print("温馨提示:您还有" + str(i) + "次登录机会")
+    else:
+        print("你的账户已被锁定，请一个小时以后再来")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file

diy1.py

@@ -2,7 +2,8 @@ username = "python"    # 保存在服务器数据库中的用户账号（正确
 userpassword = "123456"    # 保存在服务器数据库中的用户密码（正确的密码）
 
 # 请用input()实现用户输入账号、密码的功能
-
+name=input("qing")
+password=input("mi")
 
 
 # 如果用户输入的账号、密码正确，提示登陆成功
\ No newline at end of file