From: Ezio Melotti Date: Wed, 22 Jul 2009 21:08:49 +0000 (+0000) Subject: #6423 has_key -> in X-Git-Tag: v2.7a1~722 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7fc214b55d9b1d7bc87d54edac43cdb23dfe2017;p=python #6423 has_key -> in --- diff --git a/Doc/library/cgi.rst b/Doc/library/cgi.rst index 1e14e4b14d..58222eafdb 100644 --- a/Doc/library/cgi.rst +++ b/Doc/library/cgi.rst @@ -91,12 +91,13 @@ form contents from standard input or the environment (depending on the value of various environment variables set according to the CGI standard). Since it may consume standard input, it should be instantiated only once. -The :class:`FieldStorage` instance can be indexed like a Python dictionary, and -also supports the standard dictionary methods :meth:`has_key` and :meth:`keys`. -The built-in :func:`len` is also supported. Form fields containing empty -strings are ignored and do not appear in the dictionary; to keep such values, -provide a true value for the optional *keep_blank_values* keyword parameter when -creating the :class:`FieldStorage` instance. +The :class:`FieldStorage` instance can be indexed like a Python dictionary. +It allows membership testing with the :keyword:`in` operator, and also supports +the standard dictionary method :meth:`keys` and the built-in function +:func:`len`. Form fields containing empty strings are ignored and do not appear +in the dictionary; to keep such values, provide a true value for the optional +*keep_blank_values* keyword parameter when creating the :class:`FieldStorage` +instance. For instance, the following code (which assumes that the :mailheader:`Content-Type` header and blank line have already been printed) @@ -104,7 +105,7 @@ checks that the fields ``name`` and ``addr`` are both set to a non-empty string:: form = cgi.FieldStorage() - if not (form.has_key("name") and form.has_key("addr")): + if "name" not in form or "addr" not in form: print "

Error

" print "Please fill in the name and addr fields." return