save project

diy2.py

 username="phthon"
 username="phthon"
 userpassword="123456"
 userpassword="123456"
-name=input("你的用户名")
-password=input("你的密码")
 a=3
 a=3
 while True:
 while True:
-    a=a-1
-    if name!=username:
-        print("名字错误")
-        name=input("你的用户名")
-        print("还剩"+str(a)+"次")
-    if password!=userpassword:
-        print("密码错误")
-        password=input("你的密码")
-        print("还剩"+str(a)+"次")
-    if name==username and password==userpassword:
-        print("登入成功")
-        break
-    if a<0:
-        print("n")
-        exit()
+    if a>0:
+        name=input("你的用户名") 
+        password=input("你的密码") 
+        a=a-1
+        if name!=username:
+            print("名字错误")
+            print("还剩"+str(a)+"次")
+            continue
+        if password!=userpassword:
+            print("密码错误")
+            print("还剩"+str(a)+"次")
+            continue
+        if name==username and password==userpassword:
+            print("登入成功")
+            continue
+        if a<0:
+            print("n")
+            exit()
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")
\ No newline at end of file