bpo-47061: deprecate cgi and cgitb (GH-32410)

Part of PEP 594.

Doc/whatsnew/3.11.rst

@@ -834,6 +834,8 @@ Deprecated
 
   * :mod:`aifc`
   * :mod:`audioop`
+  * :mod:`cgi`
+  * :mod:`cgitb`
 
   (Contributed by Brett Cannon in :issue:`47061`.)
 

Lib/cgi.py

@@ -53,6 +53,9 @@ __all__ = ["MiniFieldStorage", "FieldStorage", "parse", "parse_multipart",
            "print_form", "print_directory", "print_arguments",
            "print_environ_usage"]
 
+
+warnings._deprecated(__name__, remove=(3,13))
+
 # Logging support
 # ===============
 

Lib/cgitb.py

@@ -31,8 +31,12 @@ import tempfile
 import time
 import tokenize
 import traceback
+import warnings
 from html import escape as html_escape
 
+warnings._deprecated(__name__, remove=(3, 13))
+
+
 def reset():
     """Return a string that resets the CGI and browser to a known state."""
     return '''<!--: spam

Lib/distutils/config.py

@@ -5,6 +5,7 @@ that uses .pypirc in the distutils.command package.
 """
 import os
 from configparser import RawConfigParser
+import warnings
 
 from distutils.cmd import Command
 
@@ -111,7 +112,9 @@ class PyPIRCCommand(Command):
 
     def _read_pypi_response(self, response):
         """Read and decode a PyPI HTTP response."""
-        import cgi
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", DeprecationWarning)
+            import cgi
         content_type = response.getheader('content-type', 'text/plain')
         encoding = cgi.parse_header(content_type)[1].get('charset', 'ascii')
         return response.read().decode(encoding)

Lib/test/test_cgi.py

@@ -1,4 +1,3 @@
-import cgi
 import os
 import sys
 import tempfile
@@ -8,6 +7,9 @@ from io import StringIO, BytesIO
 from test import support
 from test.support import warnings_helper
 
+cgi = warnings_helper.import_deprecated("cgi")
+
+
 class HackedSysModule:
     # The regression test will have real values in sys.argv, which
     # will completely confuse the test of the cgi module

Lib/test/test_cgitb.py

@@ -1,8 +1,9 @@
 from test.support.os_helper import temp_dir
 from test.support.script_helper import assert_python_failure
+from test.support.warnings_helper import import_deprecated
 import unittest
 import sys
-import cgitb
+cgitb = import_deprecated("cgitb")
 
 class TestCgitb(unittest.TestCase):
 

Lib/test/test_httpservers.py

@@ -570,14 +570,19 @@ print("Hello World")
 
 cgi_file2 = """\
 #!%s
-import cgi
+import os
+import sys
+import urllib.parse
 
 print("Content-type: text/html")
 print()
 
-form = cgi.FieldStorage()
-print("%%s, %%s, %%s" %% (form.getfirst("spam"), form.getfirst("eggs"),
-                          form.getfirst("bacon")))
+content_length = int(os.environ["CONTENT_LENGTH"])
+query_string = sys.stdin.buffer.read(content_length)
+params = {key.decode("utf-8"): val.decode("utf-8")
+            for key, val in urllib.parse.parse_qsl(query_string)}
+
+print("%%s, %%s, %%s" %% (params["spam"], params["eggs"], params["bacon"]))
 """
 
 cgi_file4 = """\

Misc/NEWS.d/next/Library/2022-04-07-20-32-47.bpo-47061.TOufgh.rst

@@ -0,0 +1 @@
+Deprecate cgi and cgitb.