auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-a=3
 while True:
 while True:
-    if a>0:
-        name = input("请输入用户名:")
-        password = input("请输入密码:")
-        a-=1
-        if name == username and password == userpassword:
-            break
-            print("登录成功!")
-        if name!=username:
-            print("用户名不存在!")
-            print("温馨提示:您还有"+str(a)+"输入次数")
-            continue
-        if password!=userpassword:
-            print("密码错误")
-            print("温馨提示:您还有"+str(a)+"输入次数")
-    else:
-        print("You are wow!")        
-        exit()
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        break
+        print("登录成功!")
+    if name!=username:
+        print("用户名不存在!")
+        continue
+    if password!=userpassword:
+        print("密码错误")    
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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