save project

diy1.py

+i=3
 username = "t"
 userpassword = "sb"
 while True:
-    c=input("请输入账号")
-    m=input("请输入密码")
-    if username==c and userpassword==m:
-        print("密码正确")
-        break
-    if username!=c:
-        print("账号错误")
-        continue
-    if userpassword!=m:
-        print("密码错误")
+    if i>0:
+        i=i-1
+        c=input("请输入账号")
+        m=input("请输入密码")
+        if username==c and userpassword==m:
+            print("密码正确")
+            break
+        if username!=c:
+            print("账号错误")
+            print("你还有"+str(i)+"机会")
+            continue
+        if userpassword!=m:
+            print("密码错误")
+            print("你还有"+str(i)+"机会")
+    else:
+        print("sb,滚") 
+        exit()            
 print("欢迎来到贝尔编程")
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