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推荐学习书目
› Learn Python the Hard Way
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› PyPI - Python Package Index
› http://diveintopython.org/toc/index.html
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值得关注的项目
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This topic created in 3779 days ago, the information mentioned may be changed or developed.
如图
如何实现价格相加，计算价格总和
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1
shakespaces Dec 22, 2015
拼写不忍直视
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2
mengzhuo Dec 22, 2015
天啊……楼主你还是回去看看书吧
不……不是那本 Python 手册，我说的是英语书！ |
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3
Arthur2e5 Dec 22, 2015  1
……你想不想知道有個內置函式叫做 sum(*iterable)？
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5
stillwater Dec 22, 2015
转换成 float 再相加吧
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6
ericls Dec 23, 2015
@shakespaces 估计是手滑 uy 在 yt 旁边
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7
latyas Dec 23, 2015 2
让 lz 难受一下
sum(map(lambda item: float(re.findall('[\d\.]+', item)[0]), map(lambda x: x.text, i.select['.price_n']))) @Arthur2e5 是 sum(iterable) sum(iterable, start=0, /) Return the sum of a 'start' value (default: 0) plus an iterable of numbers When the iterable is empty, return the start value. This function is intended specifically for use with numeric values and may reject non-numeric types. |
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