save project

diy1.py

-#定义一个函数sum_numbers()
-#要求这个函数能接收一个名为num的整型参数
-#要求这个函数能计算1+2+3+……+num的结果
-
-def sum_numbers(num):
-    if num == 1:
+def fibonacci(num):
+    if num <= 2:
         return 1
     else:
-        return sum_numbers(num-1) + num
-
-print(sum_numbers(236))
+        return fibonacci(num-1) + fibonacci(num-2)
+print(fibonacci(6))
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