将长url转换为短url -替换python
将长url转换为短url -替换python
提问于 2018-05-30 05:24:40
myfile.txt中的长urls必须转换为短urls。这是在myfile.txt中：
26-04-2018 | Publication 2018, 88936 , https://search.publications.com/pgm-2018-88936.html?search=%3fzkt%3dextended%26pst%3dPublication%26vrt%3d%26zkd%3dInTitle%26dpr%3dAll%26spd%3d20180529%26epd%3d20180529%26sdt%3dDatePublication%26pubId%3d%26pnr%3d1%26rpp%3d10&resultInx=0&sorttype=1&sortorder=4
19-04-2018 | Publication 2018, 8168 , https://search.publications.com/pgm-2018-8168.html?search=%3fzkt%3dextended%26pst%3dPublication%26vrt%3d%26zkd%3dInTitle%26dpr%3dAll%26spd%3d20180529%26epd%3d20180529%26sdt%3dDatePublication%26pubId%3d%26pnr%3d1%26rpp%3d10&resultInx=1&sorttype=1&sortorder=4
26-03-2018 | Publication 2018, 611724 , https://search.publications.com/pgm-2018-611724.html?search=%3fzkt%3dextended%26pst%3dPublication%26vrt%3d%26zkd%3dInTitle%26dpr%3dAll%26spd%3d20180529%26epd%3d20180529%26sdt%3dDatePublication%26pubId%3d%26pnr%3d1%26rpp%3d10&resultInx=2&sorttype=1&sortorder=4
01-02-2017 | Publication 2017, 1452026 , https://search.publications.com/pgm-2017-1452026.html?search=%3fzkt%3dextended%26pst%3dPublication%26vrt%3d%26zkd%3dInTitle%26dpr%3dAll%26spd%3d20180529%26epd%3d20180529%26sdt%3dDatePublication%26pubId%3d%26pnr%3d1%26rpp%3d10&resultInx=3&sorttype=1&sortorder=4在python 2.7中有这样的代码：
import re
with open('myfile.txt', 'r+') as myfile:
data = myfile.read()
url = re.findall(r'[^https.+?]', data)
urlshort = re.findall(r'[^https.+html?]', data)
for url in data:
myfile.write(url.replace(url, urlshort, data))
myfile.close()输出为：
回溯(最近一次调用)：文件"/pyscripts/data.py"，第9行，在myfile.write(url.replace(url，urlshort，data)) TypeError:需要一个整数
如何在文件中实现此功能？
回答 1
Stack Overflow用户
发布于 2018-05-30 05:30:49
在(https.*html).*中使用re.sub
import re
s = """
26-04-2018 | Publication 2018, 88936 , https://search.publications.com/pgm-2018-88936.html?search=%3fzkt%3dextended%26pst%3dPublication%26vrt%3d%26zkd%3dInTitle%26dpr%3dAll%26spd%3d20180529%26epd%3d20180529%26sdt%3dDatePublication%26pubId%3d%26pnr%3d1%26rpp%3d10&resultInx=0&sorttype=1&sortorder=4
19-04-2018 | Publication 2018, 8168 , https://search.publications.com/pgm-2018-8168.html?search=%3fzkt%3dextended%26pst%3dPublication%26vrt%3d%26zkd%3dInTitle%26dpr%3dAll%26spd%3d20180529%26epd%3d20180529%26sdt%3dDatePublication%26pubId%3d%26pnr%3d1%26rpp%3d10&resultInx=1&sorttype=1&sortorder=4
26-03-2018 | Publication 2018, 611724 , https://search.publications.com/pgm-2018-611724.html?search=%3fzkt%3dextended%26pst%3dPublication%26vrt%3d%26zkd%3dInTitle%26dpr%3dAll%26spd%3d20180529%26epd%3d20180529%26sdt%3dDatePublication%26pubId%3d%26pnr%3d1%26rpp%3d10&resultInx=2&sorttype=1&sortorder=4
01-02-2017 | Publication 2017, 1452026 , https://search.publications.com/pgm-2017-1452026.html?search=%3fzkt%3dextended%26pst%3dPublication%26vrt%3d%26zkd%3dInTitle%26dpr%3dAll%26spd%3d20180529%26epd%3d20180529%26sdt%3dDatePublication%26pubId%3d%26pnr%3d1%26rpp%3d10&resultInx=3&sorttype=1&sortorder=4
"""
print(re.sub(r'(https.*html).*', r'\1', s))输出：
26-04-2018 | Publication 2018, 88936 , https://search.publications.com/pgm-2018-88936.html
19-04-2018 | Publication 2018, 8168 , https://search.publications.com/pgm-2018-8168.html
26-03-2018 | Publication 2018, 611724 , https://search.publications.com/pgm-2018-611724.html
01-02-2017 | Publication 2017, 1452026 , https://search.publications.com/pgm-2017-1452026.html这样，您就可以将re.sub的整个结果写入到您的文件中，而不是尝试替换您当前操作的方式。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50593169
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