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Name	Size	Permission	Date	Action
LICENSE	1.03 KB	-rw-r--r--	2015-12-09 21:43
README.rst	1.54 KB	-rw-r--r--	2015-12-09 23:13

Rename

======
Tailer
======

.. image:: https://travis-ci.org/six8/pytailer.svg
    :target: https://travis-ci.org/six8/pytailer
    :alt: Build Status

Python tail is a simple implementation of GNU tail and head.

It provides 3 main functions that can be performed on any file-like object that supports ``seek()`` and ``tell()``.

* ``tail`` - read lines from the end of a file
* ``head`` - read lines from the top of a file
* ``follow`` - read lines as a file grows

It also comes with ``pytail``, a command line version offering the same functionality as GNU tail. This can be particularly useful on Windows systems that have no tail equivalent.

- `Tailer on GitHub <http://github.com/six8/pytailer>`_
- `Tailer on Pypi <http://pypi.python.org/pypi/tailer>`_

Installation
============

Install with ``pip`` or ``easy_install``.

pip install tailer

Examples
========

import tailer
  f = open('test.txt', 'w')
  for i in range(11):
      f.write('Line %d\\n' % (i + 1))
  f.close()

Tail
----
::

# Get the last 3 lines of the file
    tailer.tail(open('test.txt'), 3)
    # ['Line 9', 'Line 10', 'Line 11']

Head
----
::

# Get the first 3 lines of the file
    tailer.head(open('test.txt'), 3)
    # ['Line 1', 'Line 2', 'Line 3']

Follow
------
::

# Follow the file as it grows
    for line in tailer.follow(open('test.txt')):
        print line

Running Tests
=============

Tailer currently only has doctests.

Run tests with nose::

nosetests --with-doctest src/tailer

Run tests with doctest::

python -m doctest -v src/tailer/__init__.py