Porting code to Python 3 with 2to3
ne
FIXME intro
| Python 2 |
Python 3 |
if x <> y: |
if x != y: |
1533: fixer = None
standarderror
FIXME intro
3256: fixer = 'itertools_imports'
3657: fixer = 'metaclass'
3822: fixer = 'getcwdu'
# 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
- basestring type
- itertools functions
- itertools imports
- relative imports
- sys.exc_type, sys.exc_value, sys.exc_traceback
- list comprehensions over tuples
- os.getcwdu()
- metaclasses
- set literals (EXPLICIT)
- whitespace around commas (EXPLICIT)
- buffer() (EXPLICIT)
- common idioms (EXPLICIT)
- 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()