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...Lists Python Mailing Lists and Newsgroups Here's an overview of the mail and news resources for python. For a complete listing of python.org's public mailing lists, check both lists hosted on Mailman 2 and lists hosted on Mailman 3. To request a new list, send e-mail to postmaster @ python.org; please check first to make sure a similar list does not already exist. Mailing lists for users speaking languages other than English are listed in the non-english python resources guide, which incl...
...list. This will be the person who manages specifics of the mailing list, such as subscribe/unsubscribe approvals (if necessary), approving held posts, etc. There is always a real person on the other end of this address, so if you need to contact a human being, this is the address to use. Mailing List Policy Each mailing list has a policy for such things as who can join the list, or post messages, etc. In general all SIG lists have the following (fairly lax) policy. SIG owners are given th...
...lists, there are two common uses cases where the existing array-based list outperforms the existing BList reference implementation. These are: A large LIFO stack, where there are many .append() and .pop(-1) operations. Each operation is O(1) for an array-based list, but O(log n) for the BList. A large list that does not change size. The getitem and setitem calls are O(1) for an array-based list, but O(log n) for the BList. In performance tests on a 10,000 element list, BLists exhibited a 50...
...list[str]() [] >>> list is list[str] False >>> list == list[str] False >>> list[str] == list[str] True >>> list[str] == list[int] False >>> isinstance([1, 2, 3], list[str]) TypeError: isinstance() arg 2 cannot be a parameterized generic >>> issubclass(list, list[str]) TypeError: issubclass() arg 2 cannot be a parameterized generic >>> isinstance(list[str], types.GenericAlias) True Objects created with bare types and parameterized ty...
...list [97, 98, 99] should be converted to the string 'abc'. Let's assume we want to write a function to do this. The first version I came up with was totally straightforward: def f1(list): string = "" for item in list: string = string + chr(item) return string That can't be the fastest way to do it, said my friend. How about this one: def f2(list): return reduce(lambda string, item: string + chr(item), list, "") ...
...list (signup there) The list archives (The current archive is only available to the list members.) The Python Developer's Guide should be your first stop - we will be adding to it based on feedback from the mentorship list The Python bug tracker you're going to want to bookmark it. The Python Discourse instance Code of Conduct The following code of conduct is not meant as a means for punishment, action or censorship for the mailing list or project. Instead, it is meant to set the tone and exp...
...list literals, creating a single list? E.g.: >>> [5, 6, 1:6, 7, 9] to create: [5, 6, 1, 2, 3, 4, 5, 7, 9] How should range literals interact with another proposed new feature, "list comprehensions"? Specifically, should it be possible to create lists in list comprehensions? E.g.: >>> [x:y for x in (1, 2) y in (3, 4)] Should this example return a single list with multiple ranges: [1, 2, 1, 2, 3, 2, 2, 3] Or a list of lists, like so: [[1, 2], [1, 2, 3], [2], [2, 3]] ...
...Listings There are quite a number of Python conferences happening all year around and in many parts of the world. Many of them are taking place yearly or even more frequent: Python Conferences List on the Python Wiki -- this is the main and most complete list of conferences around the world Subsets of this list are also available on other sites: pycon.org -- lists a subset of mostly national Python conferences PyData -- listings of Python conferences specializing in AI & Data Science Sev...
...list, including the membership. To change list options, visit: http://mail.python.org/mailman/admin/<sig-name> To change a subscriber's options, visit the listinfo page for the sig: http://mail.python.org/mailman/listinfo/<sig-name> and click on "View Subscriber List" or enter the user's address to go to the options page for the user. You can then use the list administrator's password to authorize option changes or unsubscribe the user. Finally, the list administra...
...list (bullet) element. (Note: In list paragraphs it is not necessary to separate each list item with a blank line.) A paragraph that begins with a sequence of digits followed by a white-space character is treated as an ordered list element. A paragraph that begins with a sequence of sequences, where each sequence is a sequence of digits or a sequence of letters followed by a period, is treated as an ordered l...
...list will be rejected, but the archives of the old list are still available for perusal. See the SIGs home page for info about active and inactive lists. This is forum for discussion of ideas, designs, and implementations of enhancements to Python's string processing capabilities. In particular, this list helped develop a new implementation of regular expression pattern matching capabilities with a compatable syntax to Perl. ...
...list. Mailing Lists There are four mailing lists for python.org maintainers; many maintainers are on all the lists. pydotorg-www This is a public discussion list for anyone interested in the development of the python.org website. webmaster (Autoreply text) Mail that's sent to the webmaster goes to this list. There is an auto-responder that returns a general reply, answering a number of the most common questions and providing information about other sources of help. If you think the auto-r...
...list will be rejected, but the archives of the old list are still available for perusal. See the SIGs home page for info about active and inactive lists. This list was intended for the discussion of the issues concerning the Python programming environment - the facilities, including editors, interpreter, debuggers, browsers, documentation, and so forth, instrumental in the actual act of Python programming. Discussions may cover use of and problems with existing facilitie...
...list/2000-July/108893.html http://www.python.org/pipermail/python-list/2000-July/108777.html http://www.python.org/pipermail/python-list/2000-July/108848.html http://www.python.org/pipermail/python-list/2000-July/109237.html http://www.python.org/pipermail/python-list/2000-July/109250.html http://www.python.org/pipermail/python-list/2000-July/109310.html http://www.python.org/pipermail/python-list/2000-July/109448.html http://www.python.org/pipermail/python-list/2000-July/109491.html http://www....
...list, but an iterable, it has to be converted to a list before being able to do slicing; to avoid creating this temporary list, one has to resort to it = iter(seq) first = it.next() rest = list(it) Specification A tuple (or list) on the left side of a simple assignment (unpacking is not defined for augmented assignment) may contain at most one expression prepended with a single asterisk (which is henceforth called a "starred" expression, while the other expressions in the list are called "ma...
...listvalues and listitems helper functions, allowing the affected conversions to be simplified to: d.values() -> listvalues(d) d.items() -> listitems(d) The corresponding compatibility function definitions are as straightforward as their iterator counterparts: try: dict.iteritems except AttributeError: # Python 3 def listvalues(d): return list(d.values()) def listitems(d): return list(d.items()) else: # Python 2 def listvalues(d): return d....
...list Security advisories are published to multiple public locations. Advisories are sent via email to the security-announce@python.org mailing list. Subscribe to the mailing list if you'd like to be updated on newly published security advisories. The mailing list has a public archive including all historical advisories sent to the list. There is also an advisory database published to GitHub using the Open Source Vulnerability (OSV) format which can be consumed using automated tooling. CVE ...
...List Comprehensions PEP:202 Title:List Comprehensions Author:barry at python.org (Barry Warsaw) Status:Final Type:Standards Track Created:13-Jul-2000 Python-Version:2.0 Post-History: Contents Introduction The Proposed Solution Rationale Examples Reference Implementation BDFL Pronouncements References Introduction This PEP describes a proposed syntactical extension to Python, list comprehensions. The Proposed Solution It is proposed to allow conditional construction of lis...
...list will be rejected, but the archives of the old list are still available for perusal. See the SIGs home page for info about active and inactive lists. Further information: Pipermail archives Findmail archives The old list mission statement
...listed as end points for arcs but that don't have outgoing arcs themselves, and aren't listed in the graph at all. Such nodes could also be contained in the graph, with an empty list of outgoing arcs, but sometimes it is more convenient not to require this. Note that while the user calls find_path() with three arguments, it calls itself with a fourth argument: the path that has already been traversed. The default value for this argument is the empty list, '[]', meaning no nodes have be...