Commit 91632622 by BellCodeEditor

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parent 8361a14c
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#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(n):
if n == 1:
return 1
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