[Python-checkins] cpython (3.4): #23891: describe a few more modules in the tutorial
andrew.kuchling
python-checkins at python.org
Mon Jun 8 23:11:48 CEST 2015
https://hg.python.org/cpython/rev/a18615eb5aec
changeset: 96550:a18615eb5aec
branch: 3.4
parent: 96544:da642b5aaf79
user: Andrew Kuchling <amk at amk.ca>
date: Thu Apr 09 22:20:01 2015 -0400
summary:
#23891: describe a few more modules in the tutorial
files:
Doc/tutorial/stdlib.rst | 31 ++++++++++++++++++++++------
1 files changed, 24 insertions(+), 7 deletions(-)
diff --git a/Doc/tutorial/stdlib.rst b/Doc/tutorial/stdlib.rst
--- a/Doc/tutorial/stdlib.rst
+++ b/Doc/tutorial/stdlib.rst
@@ -140,6 +140,18 @@
>>> random.randrange(6) # random integer chosen from range(6)
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
computations.
@@ -311,13 +323,18 @@
(including attachments) and for implementing internet encoding and header
protocols.
-* The :mod:`xml.dom` and :mod:`xml.sax` packages provide robust support for
- parsing this popular data interchange format. Likewise, the :mod:`csv` module
- supports direct reads and writes in a common database format. Together, these
- modules and packages greatly simplify data interchange between Python
- applications and other tools.
+* The :mod:`json` package provides robust support for parsing this
+ popular data interchange format. The :mod:`csv` module supports
+ direct reading and writing of files in Comma-Separated Value format,
+ commonly supported by databases and spreadsheets. XML processing is
+ 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
:mod:`gettext`, :mod:`locale`, and the :mod:`codecs` package.
-
-
--
Repository URL: https://hg.python.org/cpython
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