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		|  | @ -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. | ||||||
|  |  | ||||||
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	 Andrew Kuchling
						Andrew Kuchling