#23891: describe a few more modules in the tutorial
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@ -140,6 +140,18 @@ The :mod:`random` module provides tools for making random selections::
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>>> random.randrange(6) # random integer chosen from range(6)
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4
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The :mod:`statistics` module calculates basic statistical properties
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(the mean, median, variance, etc.) of numeric data::
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>>> import statistics
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>>> data = [2.75, 1.75, 1.25, 0.25, 0.5, 1.25, 3.5]
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>>> statistics.mean(data)
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1.6071428571428572
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>>> statistics.median(data)
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1.25
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>>> statistics.variance(data)
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1.3720238095238095
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The SciPy project <http://scipy.org> has many other modules for numerical
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computations.
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@ -311,13 +323,18 @@ sophisticated and robust capabilities of its larger packages. For example:
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(including attachments) and for implementing internet encoding and header
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protocols.
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* The :mod:`xml.dom` and :mod:`xml.sax` packages provide robust support for
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parsing this popular data interchange format. Likewise, the :mod:`csv` module
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supports direct reads and writes in a common database format. Together, these
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modules and packages greatly simplify data interchange between Python
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applications and other tools.
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* The :mod:`json` package provides robust support for parsing this
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popular data interchange format. The :mod:`csv` module supports
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direct reading and writing of files in Comma-Separated Value format,
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commonly supported by databases and spreadsheets. XML processing is
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supported by the :mod:`xml.etree.ElementTree`, :mod:`xml.dom` and
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:mod:`xml.sax` packages. Together, these modules and packages
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greatly simplify data interchange between Python applications and
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other tools.
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* The :mod:`sqlite3` module is a wrapper for the SQLite database
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library, providing a persistent database that can be updated and
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accessed using slightly nonstandard SQL syntax.
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* Internationalization is supported by a number of modules including
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:mod:`gettext`, :mod:`locale`, and the :mod:`codecs` package.
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