save project

diy1.py

@@ -3,7 +3,11 @@
 #要求这个函数能计算1+2+3+……+num的结果
 
 def sum_numbers(num):
-
-
-
-sum_numbers(34768934)
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+    if num == 1:
+        return 1
+    tippy_a = num + sum_numbers(num-1)
+    return tippy_a
+    
+
+tippy_b = sum_numbers(44557)
+print(tippy_b)
\ No newline at end of file