# Lib/lib2to3/tests/test_fixers.py
- <>
- has_key
- apply()
- intern()
- print
- exec()
- repr()
- except
- raise
- throw
- long()
- dict()
- xrange()
- raw_input()
- input()
- func_* attributes
- xreadlines()
- imports of modules that have been renamed:
# Lib/lib2to3/fixes/fix_imports.py
MAPPING = {'StringIO':  'io',
           'cStringIO': 'io',
           'cPickle': 'pickle',
           '__builtin__' : 'builtins',
           'copy_reg': 'copyreg',
           'Queue': 'queue',
           'SocketServer': 'socketserver',
           'ConfigParser': 'configparser',
           'repr': 'reprlib',
           'FileDialog': 'tkinter.filedialog',
           'tkFileDialog': 'tkinter.filedialog',
           'SimpleDialog': 'tkinter.simpledialog',
           'tkSimpleDialog': 'tkinter.simpledialog',
           'tkColorChooser': 'tkinter.colorchooser',
           'tkCommonDialog': 'tkinter.commondialog',
           'Dialog': 'tkinter.dialog',
           'Tkdnd': 'tkinter.dnd',
           'tkFont': 'tkinter.font',
           'tkMessageBox': 'tkinter.messagebox',
           'ScrolledText': 'tkinter.scrolledtext',
           'turtle': 'tkinter.turtle',
           'Tkconstants': 'tkinter.constants',
           'Tix': 'tkinter.tix',
           'Tkinter': 'tkinter',
           'markupbase': '_markupbase',
           '_winreg': 'winreg',
           'thread': '_thread',
           'dummy_thread': '_dummy_thread',
           # anydbm and whichdb are handled by fix_imports2
           'dbhash': 'dbm.bsd',
           'dumbdbm': 'dbm.dumb',
           'dbm': 'dbm.ndbm',
           'gdbm': 'dbm.gnu',
           'xmlrpclib': 'xmlrpc.client',
           'DocXMLRPCServer': 'xmlrpc.server',
           'SimpleXMLRPCServer': 'xmlrpc.server',
           'httplib': 'http.client',
           'Cookie': 'http.cookies',
           'cookielib': 'http.cookiejar',
           'BaseHTTPServer': 'http.server',
           'SimpleHTTPServer': 'http.server',
           'CGIHTTPServer': 'http.server',
           #'test.test_support': 'test.support',
           'commands': 'subprocess',
           'UserString' : 'collections',
           'UserList' : 'collections',
           'urlparse' : 'urllib.parse',
           'robotparser' : 'urllib.robotparser',
}
- imports of urllib/urllib2
# Lib/lib2to3/fixes/fix_urllib.py
MAPPING = {'urllib':  [
                ('urllib.request',
                    ['URLOpener', 'FancyURLOpener', 'urlretrieve',
                     '_urlopener', 'urlcleanup']),
                ('urllib.parse',
                    ['quote', 'quote_plus', 'unquote', 'unquote_plus',
                     'urlencode', 'pahtname2url', 'url2pathname']),
                ('urllib.error',
                    ['ContentTooShortError'])],
           'urllib2' : [
                ('urllib.request',
                    ['urlopen', 'install_opener', 'build_opener',
                     'Request', 'OpenerDirector', 'BaseHandler',
                     'HTTPDefaultErrorHandler', 'HTTPRedirectHandler',
                     'HTTPCookieProcessor', 'ProxyHandler',
                     'HTTPPasswordMgr',
                     'HTTPPasswordMgrWithDefaultRealm',
                     'AbstractBasicAuthHandler',
                     'HTTPBasicAuthHandler', 'ProxyBasicAuthHandler',
                     'AbstractDigestAuthHandler',
                     'HTTPDigestAuthHander', 'ProxyDigestAuthHandler',
                     'HTTPHandler', 'HTTPSHandler', 'FileHandler',
                     'FTPHandler', 'CacheFTPHandler',
                     'UnknownHandler']),
                ('urllib.error',
                    ['URLError', 'HTTPError'])],
}
- tuple params (?!??!)
- __class__ special attribute
- __nonzero__ special method
- next()
- sys.maxint and sys.maxsize
- number literals
- Unicode string literals
- callable()
- filter()
- map()
- zip()
- StandardError()
- types module
- common idioms
  - while 1
  - type(X) == T, type(X) != T
  - type(X) is T, type(X) is not T
  - T is type(X), T is not type(X)
  - list.sort()
- basestring type
- buffer()
- itertools functions
- itertools imports
- relative imports
- set literals
- sys.exc_type, sys.exc_value, sys.exc_traceback
- list comprehensions over tuples
- os.getcwdu()
- metaclasses