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diy1.py

@@ -2,4 +2,11 @@
 #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:
+        return 1
+    sum=sum_numbers(num-1)
+    return num+sum
 
+Sum=sum_numbers(100)
+print(Sum)
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lesson14-diy1.py

+def sum_numbers(num):
+      # 递归的出口
+      if num == 1:
+           return 1
+
+      #  数字的累加
+      temp = sum_numbers(num - 1)
+      return num +temp
+result = sum_numbers(100)
+print(result)
\ No newline at end of file