save project

diy2.py

 username = "python"
 username = "python"
-userpassword = "123456"
-i=0
-while i<10:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    # if...elif...else
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
-    elif name!=username and password!=userpassword:
-        print("用户名和密码错误!请重新输入")
-        continue
-    elif name!=username:
-        print("用户名错误!请重新输入")
-        continue
-    # elif password!=userpassword:
-    else:
-        print("密码错误!请重新输入")
-        continue
-    i=i+1
+userpassword = "124356"
+i=5
+while True:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        # if...elif...else
+        if i>0:
+            if name == username and password == userpassword:
+                print("登录成功!")
+                break
+            elif name!=username and password!=userpassword:
+                print("用户名和密码错误!请重新输入")
+                print("你还有"+str(i)+"次机会")
+                continue
+            elif name!=username:
+                print("用户名错误!请重新输入")
+                print("你还有"+str(i)+"次机会")
+                continue
+            # elif password!=userpassword:
+            else:
+                print("密码错误!请重新输入")
+                print("你还有"+str(i)+"次机会")
+                continue
+            i=i-1
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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