save project

diy2.py

+
+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        username1=input("输入用户名")
+        userpassword1=input("输入密码")
+        i=i-1
+        if username1!=username:
+            print("用户名输入错误，请重新输入")
+            continue
+        password1 = input("请输入密码:")
+        if  password1!=userpassword: 
+            print("密码输入错误，请重新输入")
+        if username1==username and password1==userpassword: 
+            break
+            print("输入错误，请重新输入")
+    else:
+          print("输入次数超限")
+          exit()            
+print("欢迎来到贝尔编程")    
+

diy3.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        username1=input("输入用户名")
+        userpassword1=input("输入密码")
+        i=i-1
+        if username1==username and password1==userpassword: 
+            break
+        if username1!=username:
+            print("用户名输入错误，请重新输入")
+            print("剩余"+str(i)+"次机会")
+            continue
+        if  password1!=userpassword: 
+            print("密码输入错误，请重新输入")
+            print("剩余"+str(i)+"次机会")
+    else:
+          print("输入次数超限")
+          exit()            
+print("欢迎来到贝尔编程")    
+