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                所屬專題:[Python社區](README.md) &emsp; ## 問題 **輸入:** 兩個正整數`$ a $`與`$ b $`(`$ a<b<10000 $`)。 **輸出:** 從`$ a $`到`$ b $`(包含`$ b $`)之間的所有奇數之和。 **樣例數據:** ``` 100 200 ``` **樣例輸出:** ``` 7500 ``` &emsp; ## 背景知識 該問題涉及Python語言的控制流。詳情請查閱ROSALIND網站上[關于該問題的背景說明](http://rosalind.info/problems/ini4/)。 &emsp; ## 解答 ```python def oddsum(a, b): """計算屬于[a, b]區間內所有奇數的和""" s = 0 for i in range(a, b+1): if i%2!=0: s +=i return s ## --main-- with open("rosalind_ini4.txt", 'r') as f1: a,b = map(int, f1.read().split()) with open("rosalind_ini4_out.txt", 'w') as f2: f2.write(str(oddsum(a, b))) ```
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