We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
remain py2.6 stuff that can be delete
Here :
https://github.com/web2py/web2py/blob/0d646fa5e7c731cb5c392adf6a885351e77e4903/gluon/import_all.py#L86

py26_deprecated is used before been declared...

Since we drop py2.6 : https://groups.google.com/d/msg/web2py-developers/xz5o_CF4GOo/ZJm0HImTAAAJ

Shall we delete those line??

I send a PR if you take it...

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `gluon/import_all.py`
Content:
```
1 #!/usr/bin/env python
2 
3 """
4 This file is part of the web2py Web Framework
5 Copyrighted by Massimo Di Pierro <mdipierro@cs.depaul.edu>
6 License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)
7 
8 This file is not strictly required by web2py. It is used for three purposes:
9 
10 1) check that all required modules are installed properly
11 2) provide py2exe and py2app a list of modules to be packaged in the binary
12 3) (optional) preload modules in memory to speed up http responses
13 
14 """
15 
16 import os
17 import sys
18 
19 base_modules = ['aifc', 'anydbm', 'array', 'asynchat', 'asyncore', 'atexit',
20                 'audioop', 'base64', 'BaseHTTPServer', 'Bastion', 'binascii',
21                 'binhex', 'bisect', 'bz2', 'calendar', 'cgi', 'CGIHTTPServer',
22                 'cgitb', 'chunk', 'cmath', 'cmd', 'code', 'codecs', 'codeop',
23                 'collections', 'colorsys', 'compileall', 'compiler',
24                 'compiler.ast', 'compiler.visitor', 'ConfigParser',
25                 'contextlib', 'Cookie', 'cookielib', 'copy', 'copy_reg',
26                 'collections',
27                 'cPickle', 'cProfile', 'cStringIO', 'csv', 'ctypes',
28                 'datetime', 'decimal', 'difflib', 'dircache', 'dis',
29                 'doctest', 'DocXMLRPCServer', 'dumbdbm', 'dummy_thread',
30                 'dummy_threading', 'email', 'email.charset', 'email.encoders',
31                 'email.errors', 'email.generator', 'email.header',
32                 'email.iterators', 'email.message', 'email.mime',
33                 'email.mime.audio', 'email.mime.base', 'email.mime.image',
34                 'email.mime.message', 'email.mime.multipart',
35                 'email.mime.nonmultipart', 'email.mime.text', 'email.parser',
36                 'email.utils', 'encodings.idna', 'errno', 'exceptions',
37                 'filecmp', 'fileinput', 'fnmatch', 'formatter', 'fpformat',
38                 'ftplib', 'functools', 'gc', 'getopt', 'getpass', 'gettext',
39                 'glob', 'gzip', 'hashlib', 'heapq', 'hmac', 'hotshot',
40                 'hotshot.stats', 'htmlentitydefs', 'htmllib', 'HTMLParser',
41                 'httplib', 'imaplib', 'imghdr', 'imp', 'inspect',
42                 'itertools', 'keyword', 'linecache', 'locale', 'logging',
43                 'macpath', 'mailbox', 'mailcap', 'marshal', 'math',
44                 'mimetools', 'mimetypes', 'mmap', 'modulefinder', 'mutex',
45                 'netrc', 'new', 'nntplib', 'operator', 'optparse', 'os',
46                 'parser', 'pdb', 'pickle', 'pickletools', 'pkgutil',
47                 'platform', 'poplib', 'pprint', 'py_compile', 'pyclbr',
48                 'pydoc', 'Queue', 'quopri', 'random', 're', 'repr',
49                 'rexec', 'rfc822', 'rlcompleter', 'robotparser', 'runpy',
50                 'sched', 'select', 'sgmllib', 'shelve',
51                 'shlex', 'shutil', 'signal', 'SimpleHTTPServer',
52                 'SimpleXMLRPCServer', 'site', 'smtpd', 'smtplib',
53                 'sndhdr', 'socket', 'SocketServer', 'sqlite3',
54                 'stat', 'statvfs', 'string', 'StringIO',
55                 'stringprep', 'struct', 'subprocess', 'sunau', 'symbol',
56                 'tabnanny', 'tarfile', 'telnetlib', 'tempfile', 'textwrap', 'thread', 'threading',
57                 'time', 'timeit', 'Tix', 'Tkinter', 'token',
58                 'tokenize', 'trace', 'traceback', 'types',
59                 'unicodedata', 'unittest', 'urllib', 'urllib2',
60                 'urlparse', 'user', 'UserDict', 'UserList', 'UserString',
61                 'uu', 'uuid', 'warnings', 'wave', 'weakref', 'webbrowser',
62                 'whichdb', 'wsgiref', 'wsgiref.handlers', 'wsgiref.headers',
63                 'wsgiref.simple_server', 'wsgiref.util', 'wsgiref.validate',
64                 'xdrlib', 'xml.dom', 'xml.dom.minidom', 'xml.dom.pulldom',
65                 'xml.etree.ElementTree', 'xml.parsers.expat', 'xml.sax',
66                 'xml.sax.handler', 'xml.sax.saxutils', 'xml.sax.xmlreader',
67                 'xmlrpclib', 'zipfile', 'zipimport', 'zlib', 'mhlib',
68                 'MimeWriter', 'mimify', 'multifile', 'sets']
69 
70 contributed_modules = []
71 
72 # Python base version
73 python_version = sys.version[:3]
74 
75 # Modules which we want to raise an Exception if they are missing
76 alert_dependency = ['hashlib', 'uuid']
77 
78 # Now we remove the blacklisted modules if we are using the stated
79 # python version.
80 #
81 # List of modules deprecated in Python 2.6 or 2.7 that are in the above set
82 py27_deprecated = ['mhlib', 'multifile', 'mimify', 'sets', 'MimeWriter']  # And ['optparse'] but we need it for now
83 
84 if python_version >= '2.6':
85     base_modules += ['json', 'multiprocessing']
86     base_modules = list(set(base_modules).difference(set(py26_deprecated)))
87 
88 if python_version >= '2.7':
89     base_modules += ['argparse', 'json', 'multiprocessing']
90     base_modules = list(set(base_modules).difference(set(py27_deprecated)))
91 
92 # Now iterate in the base_modules, trying to do the import
93 for module in base_modules + contributed_modules:
94     try:
95         __import__(module, globals(), locals(), [])
96     except:
97         # Raise an exception if the current module is a dependency
98         if module in alert_dependency:
99             msg = "Missing dependency: %(module)s\n" % locals()
100             msg += "Try the following command: "
101             msg += "easy_install-%(python_version)s -U %(module)s" % locals()
102             raise ImportError(msg)
103
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/gluon/import_all.py b/gluon/import_all.py
--- a/gluon/import_all.py
+++ b/gluon/import_all.py
@@ -78,13 +78,9 @@
 # Now we remove the blacklisted modules if we are using the stated
 # python version.
 #
-# List of modules deprecated in Python 2.6 or 2.7 that are in the above set
+# List of modules deprecated in Python 2.7 that are in the above list
 py27_deprecated = ['mhlib', 'multifile', 'mimify', 'sets', 'MimeWriter']  # And ['optparse'] but we need it for now
 
-if python_version >= '2.6':
-    base_modules += ['json', 'multiprocessing']
-    base_modules = list(set(base_modules).difference(set(py26_deprecated)))
-
 if python_version >= '2.7':
     base_modules += ['argparse', 'json', 'multiprocessing']
     base_modules = list(set(base_modules).difference(set(py27_deprecated)))

{"golden_diff": "diff --git a/gluon/import_all.py b/gluon/import_all.py\n--- a/gluon/import_all.py\n+++ b/gluon/import_all.py\n@@ -78,13 +78,9 @@\n # Now we remove the blacklisted modules if we are using the stated\n # python version.\n #\n-# List of modules deprecated in Python 2.6 or 2.7 that are in the above set\n+# List of modules deprecated in Python 2.7 that are in the above list\n py27_deprecated = ['mhlib', 'multifile', 'mimify', 'sets', 'MimeWriter']  # And ['optparse'] but we need it for now\n \n-if python_version >= '2.6':\n-    base_modules += ['json', 'multiprocessing']\n-    base_modules = list(set(base_modules).difference(set(py26_deprecated)))\n-\n if python_version >= '2.7':\n     base_modules += ['argparse', 'json', 'multiprocessing']\n     base_modules = list(set(base_modules).difference(set(py27_deprecated)))\n", "issue": "remain py2.6 stuff that can be delete\nHere :\r\nhttps://github.com/web2py/web2py/blob/0d646fa5e7c731cb5c392adf6a885351e77e4903/gluon/import_all.py#L86\r\n\r\npy26_deprecated is used before been declared...\r\n\r\nSince we drop py2.6 : https://groups.google.com/d/msg/web2py-developers/xz5o_CF4GOo/ZJm0HImTAAAJ\r\n\r\nShall we delete those line??\r\n\r\nI send a PR if you take it...\n", "before_files": [{"content": "#!/usr/bin/env python\n\n\"\"\"\nThis file is part of the web2py Web Framework\nCopyrighted by Massimo Di Pierro <mdipierro@cs.depaul.edu>\nLicense: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)\n\nThis file is not strictly required by web2py. It is used for three purposes:\n\n1) check that all required modules are installed properly\n2) provide py2exe and py2app a list of modules to be packaged in the binary\n3) (optional) preload modules in memory to speed up http responses\n\n\"\"\"\n\nimport os\nimport sys\n\nbase_modules = ['aifc', 'anydbm', 'array', 'asynchat', 'asyncore', 'atexit',\n                'audioop', 'base64', 'BaseHTTPServer', 'Bastion', 'binascii',\n                'binhex', 'bisect', 'bz2', 'calendar', 'cgi', 'CGIHTTPServer',\n                'cgitb', 'chunk', 'cmath', 'cmd', 'code', 'codecs', 'codeop',\n                'collections', 'colorsys', 'compileall', 'compiler',\n                'compiler.ast', 'compiler.visitor', 'ConfigParser',\n                'contextlib', 'Cookie', 'cookielib', 'copy', 'copy_reg',\n                'collections',\n                'cPickle', 'cProfile', 'cStringIO', 'csv', 'ctypes',\n                'datetime', 'decimal', 'difflib', 'dircache', 'dis',\n                'doctest', 'DocXMLRPCServer', 'dumbdbm', 'dummy_thread',\n                'dummy_threading', 'email', 'email.charset', 'email.encoders',\n                'email.errors', 'email.generator', 'email.header',\n                'email.iterators', 'email.message', 'email.mime',\n                'email.mime.audio', 'email.mime.base', 'email.mime.image',\n                'email.mime.message', 'email.mime.multipart',\n                'email.mime.nonmultipart', 'email.mime.text', 'email.parser',\n                'email.utils', 'encodings.idna', 'errno', 'exceptions',\n                'filecmp', 'fileinput', 'fnmatch', 'formatter', 'fpformat',\n                'ftplib', 'functools', 'gc', 'getopt', 'getpass', 'gettext',\n                'glob', 'gzip', 'hashlib', 'heapq', 'hmac', 'hotshot',\n                'hotshot.stats', 'htmlentitydefs', 'htmllib', 'HTMLParser',\n                'httplib', 'imaplib', 'imghdr', 'imp', 'inspect',\n                'itertools', 'keyword', 'linecache', 'locale', 'logging',\n                'macpath', 'mailbox', 'mailcap', 'marshal', 'math',\n                'mimetools', 'mimetypes', 'mmap', 'modulefinder', 'mutex',\n                'netrc', 'new', 'nntplib', 'operator', 'optparse', 'os',\n                'parser', 'pdb', 'pickle', 'pickletools', 'pkgutil',\n                'platform', 'poplib', 'pprint', 'py_compile', 'pyclbr',\n                'pydoc', 'Queue', 'quopri', 'random', 're', 'repr',\n                'rexec', 'rfc822', 'rlcompleter', 'robotparser', 'runpy',\n                'sched', 'select', 'sgmllib', 'shelve',\n                'shlex', 'shutil', 'signal', 'SimpleHTTPServer',\n                'SimpleXMLRPCServer', 'site', 'smtpd', 'smtplib',\n                'sndhdr', 'socket', 'SocketServer', 'sqlite3',\n                'stat', 'statvfs', 'string', 'StringIO',\n                'stringprep', 'struct', 'subprocess', 'sunau', 'symbol',\n                'tabnanny', 'tarfile', 'telnetlib', 'tempfile', 'textwrap', 'thread', 'threading',\n                'time', 'timeit', 'Tix', 'Tkinter', 'token',\n                'tokenize', 'trace', 'traceback', 'types',\n                'unicodedata', 'unittest', 'urllib', 'urllib2',\n                'urlparse', 'user', 'UserDict', 'UserList', 'UserString',\n                'uu', 'uuid', 'warnings', 'wave', 'weakref', 'webbrowser',\n                'whichdb', 'wsgiref', 'wsgiref.handlers', 'wsgiref.headers',\n                'wsgiref.simple_server', 'wsgiref.util', 'wsgiref.validate',\n                'xdrlib', 'xml.dom', 'xml.dom.minidom', 'xml.dom.pulldom',\n                'xml.etree.ElementTree', 'xml.parsers.expat', 'xml.sax',\n                'xml.sax.handler', 'xml.sax.saxutils', 'xml.sax.xmlreader',\n                'xmlrpclib', 'zipfile', 'zipimport', 'zlib', 'mhlib',\n                'MimeWriter', 'mimify', 'multifile', 'sets']\n\ncontributed_modules = []\n\n# Python base version\npython_version = sys.version[:3]\n\n# Modules which we want to raise an Exception if they are missing\nalert_dependency = ['hashlib', 'uuid']\n\n# Now we remove the blacklisted modules if we are using the stated\n# python version.\n#\n# List of modules deprecated in Python 2.6 or 2.7 that are in the above set\npy27_deprecated = ['mhlib', 'multifile', 'mimify', 'sets', 'MimeWriter']  # And ['optparse'] but we need it for now\n\nif python_version >= '2.6':\n    base_modules += ['json', 'multiprocessing']\n    base_modules = list(set(base_modules).difference(set(py26_deprecated)))\n\nif python_version >= '2.7':\n    base_modules += ['argparse', 'json', 'multiprocessing']\n    base_modules = list(set(base_modules).difference(set(py27_deprecated)))\n\n# Now iterate in the base_modules, trying to do the import\nfor module in base_modules + contributed_modules:\n    try:\n        __import__(module, globals(), locals(), [])\n    except:\n        # Raise an exception if the current module is a dependency\n        if module in alert_dependency:\n            msg = \"Missing dependency: %(module)s\\n\" % locals()\n            msg += \"Try the following command: \"\n            msg += \"easy_install-%(python_version)s -U %(module)s\" % locals()\n            raise ImportError(msg)\n", "path": "gluon/import_all.py"}], "after_files": [{"content": "#!/usr/bin/env python\n\n\"\"\"\nThis file is part of the web2py Web Framework\nCopyrighted by Massimo Di Pierro <mdipierro@cs.depaul.edu>\nLicense: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)\n\nThis file is not strictly required by web2py. It is used for three purposes:\n\n1) check that all required modules are installed properly\n2) provide py2exe and py2app a list of modules to be packaged in the binary\n3) (optional) preload modules in memory to speed up http responses\n\n\"\"\"\n\nimport os\nimport sys\n\nbase_modules = ['aifc', 'anydbm', 'array', 'asynchat', 'asyncore', 'atexit',\n                'audioop', 'base64', 'BaseHTTPServer', 'Bastion', 'binascii',\n                'binhex', 'bisect', 'bz2', 'calendar', 'cgi', 'CGIHTTPServer',\n                'cgitb', 'chunk', 'cmath', 'cmd', 'code', 'codecs', 'codeop',\n                'collections', 'colorsys', 'compileall', 'compiler',\n                'compiler.ast', 'compiler.visitor', 'ConfigParser',\n                'contextlib', 'Cookie', 'cookielib', 'copy', 'copy_reg',\n                'collections',\n                'cPickle', 'cProfile', 'cStringIO', 'csv', 'ctypes',\n                'datetime', 'decimal', 'difflib', 'dircache', 'dis',\n                'doctest', 'DocXMLRPCServer', 'dumbdbm', 'dummy_thread',\n                'dummy_threading', 'email', 'email.charset', 'email.encoders',\n                'email.errors', 'email.generator', 'email.header',\n                'email.iterators', 'email.message', 'email.mime',\n                'email.mime.audio', 'email.mime.base', 'email.mime.image',\n                'email.mime.message', 'email.mime.multipart',\n                'email.mime.nonmultipart', 'email.mime.text', 'email.parser',\n                'email.utils', 'encodings.idna', 'errno', 'exceptions',\n                'filecmp', 'fileinput', 'fnmatch', 'formatter', 'fpformat',\n                'ftplib', 'functools', 'gc', 'getopt', 'getpass', 'gettext',\n                'glob', 'gzip', 'hashlib', 'heapq', 'hmac', 'hotshot',\n                'hotshot.stats', 'htmlentitydefs', 'htmllib', 'HTMLParser',\n                'httplib', 'imaplib', 'imghdr', 'imp', 'inspect',\n                'itertools', 'keyword', 'linecache', 'locale', 'logging',\n                'macpath', 'mailbox', 'mailcap', 'marshal', 'math',\n                'mimetools', 'mimetypes', 'mmap', 'modulefinder', 'mutex',\n                'netrc', 'new', 'nntplib', 'operator', 'optparse', 'os',\n                'parser', 'pdb', 'pickle', 'pickletools', 'pkgutil',\n                'platform', 'poplib', 'pprint', 'py_compile', 'pyclbr',\n                'pydoc', 'Queue', 'quopri', 'random', 're', 'repr',\n                'rexec', 'rfc822', 'rlcompleter', 'robotparser', 'runpy',\n                'sched', 'select', 'sgmllib', 'shelve',\n                'shlex', 'shutil', 'signal', 'SimpleHTTPServer',\n                'SimpleXMLRPCServer', 'site', 'smtpd', 'smtplib',\n                'sndhdr', 'socket', 'SocketServer', 'sqlite3',\n                'stat', 'statvfs', 'string', 'StringIO',\n                'stringprep', 'struct', 'subprocess', 'sunau', 'symbol',\n                'tabnanny', 'tarfile', 'telnetlib', 'tempfile', 'textwrap', 'thread', 'threading',\n                'time', 'timeit', 'Tix', 'Tkinter', 'token',\n                'tokenize', 'trace', 'traceback', 'types',\n                'unicodedata', 'unittest', 'urllib', 'urllib2',\n                'urlparse', 'user', 'UserDict', 'UserList', 'UserString',\n                'uu', 'uuid', 'warnings', 'wave', 'weakref', 'webbrowser',\n                'whichdb', 'wsgiref', 'wsgiref.handlers', 'wsgiref.headers',\n                'wsgiref.simple_server', 'wsgiref.util', 'wsgiref.validate',\n                'xdrlib', 'xml.dom', 'xml.dom.minidom', 'xml.dom.pulldom',\n                'xml.etree.ElementTree', 'xml.parsers.expat', 'xml.sax',\n                'xml.sax.handler', 'xml.sax.saxutils', 'xml.sax.xmlreader',\n                'xmlrpclib', 'zipfile', 'zipimport', 'zlib', 'mhlib',\n                'MimeWriter', 'mimify', 'multifile', 'sets']\n\ncontributed_modules = []\n\n# Python base version\npython_version = sys.version[:3]\n\n# Modules which we want to raise an Exception if they are missing\nalert_dependency = ['hashlib', 'uuid']\n\n# Now we remove the blacklisted modules if we are using the stated\n# python version.\n#\n# List of modules deprecated in Python 2.7 that are in the above list\npy27_deprecated = ['mhlib', 'multifile', 'mimify', 'sets', 'MimeWriter']  # And ['optparse'] but we need it for now\n\nif python_version >= '2.7':\n    base_modules += ['argparse', 'json', 'multiprocessing']\n    base_modules = list(set(base_modules).difference(set(py27_deprecated)))\n\n# Now iterate in the base_modules, trying to do the import\nfor module in base_modules + contributed_modules:\n    try:\n        __import__(module, globals(), locals(), [])\n    except:\n        # Raise an exception if the current module is a dependency\n        if module in alert_dependency:\n            msg = \"Missing dependency: %(module)s\\n\" % locals()\n            msg += \"Try the following command: \"\n            msg += \"easy_install-%(python_version)s -U %(module)s\" % locals()\n            raise ImportError(msg)\n", "path": "gluon/import_all.py"}]}