save project

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 
+    if name != username:
+        print('用户名已经错误了哦，请重新输入。')
+        continue
+    if password != userpassword:
+        print('密码错误，请重新输入。')
+print('欢迎来到贝尔编程。')
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try.py

+i=0
+b=0
+while i<5:
+    print('悟空')
+    i = i+1
+    print('第',str(i=))
+    if i == 4:
+        break
+