在Python 2中修改URL组件 [英] Modify URL components in Python 2

问题描述

是否有更干净的方法来修改Python 2中URL的某些部分?

Is there a cleaner way to modify some parts of a URL in Python 2?

例如

http://foo/bar -> http://foo/yah

目前，我正在这样做:

import urlparse

url = 'http://foo/bar'

# Modify path component of URL from 'bar' to 'yah'
# Use nasty convert-to-list hack due to urlparse.ParseResult being immutable
parts = list(urlparse.urlparse(url))
parts[2] = 'yah'

url = urlparse.urlunparse(parts)

有更清洁的解决方案吗?

Is there a cleaner solution?

推荐答案

不幸的是，该文档已过时. urlparse.urlparse()(和urlparse.urlsplit())产生的结果使用 生产的类作为基础.

Unfortunately, the documentation is out of date; the results produced by urlparse.urlparse() (and urlparse.urlsplit()) use a collections.namedtuple()-produced class as a base.

不要将此namedtuple转换为列表，而要使用为该任务提供的实用程序方法:

Don't turn this namedtuple into a list, but make use of the utility method provided for just this task:

parts = urlparse.urlparse(url)
parts = parts._replace(path='yah')

url = parts.geturl()

通过 namedtuple._replace()方法，您可以创建替换了特定元素的新副本. ParseResult.geturl()方法然后重新加入各部分为您找到一个网址.

The namedtuple._replace() method lets you create a new copy with specific elements replaced. The ParseResult.geturl() method then re-joins the parts into a url for you.

演示:

>>> import urlparse
>>> url = 'http://foo/bar'
>>> parts = urlparse.urlparse(url)
>>> parts = parts._replace(path='yah')
>>> parts.geturl()
'http://foo/yah'

mgilson 提交了

mgilson filed a bug report (with patch) to address the documentation issue.

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