#6423 has_key -> in
diff --git a/Doc/library/cgi.rst b/Doc/library/cgi.rst
index 1e14e4b..58222ea 100644
--- a/Doc/library/cgi.rst
+++ b/Doc/library/cgi.rst
@@ -91,12 +91,13 @@
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 @@
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 "<H1>Error</H1>"
print "Please fill in the name and addr fields."
return