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| author | R David Murray <rdmurray@bitdance.com> | 2013-04-28 15:07:16 (GMT) |
|---|---|---|
| committer | R David Murray <rdmurray@bitdance.com> | 2013-04-28 15:07:16 (GMT) |
| commit | 5aea37ad1dad0841ab6b5408156cff592fbfa310 (patch) | |
| tree | b797422a9b99d0958bd1c86775d9bb03429522a9 /Doc/library/urllib.request.rst | |
| parent | abac0a7744c6c317821935f86a342a44cba1aaaf (diff) | |
| download | cpython-5aea37ad1dad0841ab6b5408156cff592fbfa310.zip cpython-5aea37ad1dad0841ab6b5408156cff592fbfa310.tar.gz cpython-5aea37ad1dad0841ab6b5408156cff592fbfa310.tar.bz2 | |
#7152: Clarify that ProxyHandler is added only if proxy settings are detected.
Behavior confirmation and initial patch by Jessica McKellar.
Diffstat (limited to 'Doc/library/urllib.request.rst')
| -rw-r--r-- | Doc/library/urllib.request.rst | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/Doc/library/urllib.request.rst b/Doc/library/urllib.request.rst index c507084..0ccfda2 100644 --- a/Doc/library/urllib.request.rst +++ b/Doc/library/urllib.request.rst @@ -87,8 +87,10 @@ The :mod:`urllib.request` module defines the following functions: the default installed global :class:`OpenerDirector` uses :class:`UnknownHandler` to ensure this never happens). - In addition, default installed :class:`ProxyHandler` makes sure the requests - are handled through the proxy when they are set. + In addition, if proxy settings are detected (for example, when a ``*_proxy`` + environment variable like :envvar:`http_proxy` is set), + :class:`ProxyHandler` is default installed and makes sure the requests are + handled through the proxy. The legacy ``urllib.urlopen`` function from Python 2.6 and earlier has been discontinued; :func:`urllib.request.urlopen` corresponds to the old @@ -126,7 +128,8 @@ The :mod:`urllib.request` module defines the following functions: subclasses of :class:`BaseHandler` (in which case it must be possible to call the constructor without any parameters). Instances of the following classes will be in front of the *handler*\s, unless the *handler*\s contain them, - instances of them or subclasses of them: :class:`ProxyHandler`, + instances of them or subclasses of them: :class:`ProxyHandler` (if proxy + settings are detected), :class:`UnknownHandler`, :class:`HTTPHandler`, :class:`HTTPDefaultErrorHandler`, :class:`HTTPRedirectHandler`, :class:`FTPHandler`, :class:`FileHandler`, :class:`HTTPErrorProcessor`. @@ -256,9 +259,9 @@ The following classes are provided: Cause requests to go through a proxy. If *proxies* is given, it must be a dictionary mapping protocol names to URLs of proxies. The default is to read the list of proxies from the environment variables :envvar:`<protocol>_proxy`. - If no proxy environment variables are set, in a Windows environment, proxy - settings are obtained from the registry's Internet Settings section and in a - Mac OS X environment, proxy information is retrieved from the OS X System + If no proxy environment variables are set, then in a Windows environment proxy + settings are obtained from the registry's Internet Settings section, and in a + Mac OS X environment proxy information is retrieved from the OS X System Configuration Framework. To disable autodetected proxy pass an empty dictionary. |