mirror of
https://github.com/python/cpython.git
synced 2025-07-26 04:34:20 +00:00
Merge from 3.4
This commit is contained in:
commit
20f628ee08
2 changed files with 32 additions and 15 deletions
|
@ -140,6 +140,18 @@ The :mod:`random` module provides tools for making random selections::
|
||||||
>>> random.randrange(6) # random integer chosen from range(6)
|
>>> random.randrange(6) # random integer chosen from range(6)
|
||||||
4
|
4
|
||||||
|
|
||||||
|
The :mod:`statistics` module calculates basic statistical properties
|
||||||
|
(the mean, median, variance, etc.) of numeric data::
|
||||||
|
|
||||||
|
>>> import statistics
|
||||||
|
>>> data = [2.75, 1.75, 1.25, 0.25, 0.5, 1.25, 3.5]
|
||||||
|
>>> statistics.mean(data)
|
||||||
|
1.6071428571428572
|
||||||
|
>>> statistics.median(data)
|
||||||
|
1.25
|
||||||
|
>>> statistics.variance(data)
|
||||||
|
1.3720238095238095
|
||||||
|
|
||||||
The SciPy project <http://scipy.org> has many other modules for numerical
|
The SciPy project <http://scipy.org> has many other modules for numerical
|
||||||
computations.
|
computations.
|
||||||
|
|
||||||
|
@ -311,13 +323,18 @@ sophisticated and robust capabilities of its larger packages. For example:
|
||||||
(including attachments) and for implementing internet encoding and header
|
(including attachments) and for implementing internet encoding and header
|
||||||
protocols.
|
protocols.
|
||||||
|
|
||||||
* The :mod:`xml.dom` and :mod:`xml.sax` packages provide robust support for
|
* The :mod:`json` package provides robust support for parsing this
|
||||||
parsing this popular data interchange format. Likewise, the :mod:`csv` module
|
popular data interchange format. The :mod:`csv` module supports
|
||||||
supports direct reads and writes in a common database format. Together, these
|
direct reading and writing of files in Comma-Separated Value format,
|
||||||
modules and packages greatly simplify data interchange between Python
|
commonly supported by databases and spreadsheets. XML processing is
|
||||||
applications and other tools.
|
supported by the :mod:`xml.etree.ElementTree`, :mod:`xml.dom` and
|
||||||
|
:mod:`xml.sax` packages. Together, these modules and packages
|
||||||
|
greatly simplify data interchange between Python applications and
|
||||||
|
other tools.
|
||||||
|
|
||||||
|
* The :mod:`sqlite3` module is a wrapper for the SQLite database
|
||||||
|
library, providing a persistent database that can be updated and
|
||||||
|
accessed using slightly nonstandard SQL syntax.
|
||||||
|
|
||||||
* Internationalization is supported by a number of modules including
|
* Internationalization is supported by a number of modules including
|
||||||
:mod:`gettext`, :mod:`locale`, and the :mod:`codecs` package.
|
:mod:`gettext`, :mod:`locale`, and the :mod:`codecs` package.
|
||||||
|
|
||||||
|
|
||||||
|
|
|
@ -48,6 +48,9 @@ More Python resources:
|
||||||
Particularly notable contributions are collected in a book also titled Python
|
Particularly notable contributions are collected in a book also titled Python
|
||||||
Cookbook (O'Reilly & Associates, ISBN 0-596-00797-3.)
|
Cookbook (O'Reilly & Associates, ISBN 0-596-00797-3.)
|
||||||
|
|
||||||
|
* http://www.pyvideo.org collects links to Python-related videos from
|
||||||
|
conferences and user-group meetings.
|
||||||
|
|
||||||
* http://scipy.org: The Scientific Python project includes modules for fast
|
* http://scipy.org: The Scientific Python project includes modules for fast
|
||||||
array computations and manipulations plus a host of packages for such
|
array computations and manipulations plus a host of packages for such
|
||||||
things as linear algebra, Fourier transforms, non-linear solvers,
|
things as linear algebra, Fourier transforms, non-linear solvers,
|
||||||
|
@ -57,14 +60,11 @@ For Python-related questions and problem reports, you can post to the newsgroup
|
||||||
:newsgroup:`comp.lang.python`, or send them to the mailing list at
|
:newsgroup:`comp.lang.python`, or send them to the mailing list at
|
||||||
python-list@python.org. The newsgroup and mailing list are gatewayed, so
|
python-list@python.org. The newsgroup and mailing list are gatewayed, so
|
||||||
messages posted to one will automatically be forwarded to the other. There are
|
messages posted to one will automatically be forwarded to the other. There are
|
||||||
around 120 postings a day (with peaks up to several hundred), asking (and
|
hundreds of postings a day, asking (and
|
||||||
answering) questions, suggesting new features, and announcing new modules.
|
answering) questions, suggesting new features, and announcing new modules.
|
||||||
Before posting, be sure to check the list of :ref:`Frequently Asked Questions
|
|
||||||
<faq-index>` (also called the FAQ).
|
|
||||||
Mailing list archives are available at https://mail.python.org/pipermail/.
|
Mailing list archives are available at https://mail.python.org/pipermail/.
|
||||||
The FAQ answers many of the questions that come up again and again,
|
|
||||||
and may already contain the solution for your problem.
|
|
||||||
|
|
||||||
.. Postings figure based on average of last six months activity as
|
Before posting, be sure to check the list of
|
||||||
reported by www.egroups.com; Jan. 2000 - June 2000: 21272 msgs / 182
|
:ref:`Frequently Asked Questions <faq-index>` (also called the FAQ). The
|
||||||
days = 116.9 msgs / day and steadily increasing. (XXX up to date figures?)
|
FAQ answers many of the questions that come up again and again, and may
|
||||||
|
already contain the solution for your problem.
|
||||||
|
|
Loading…
Add table
Add a link
Reference in a new issue