https://github.com/cr0hn/python-pipes

Helpers to manage stdin / stdout and UNIX pipes
https://github.com/cr0hn/python-pipes

pipeline stderr stdin stdout unix

Last synced: about 2 months ago
JSON representation

Helpers to manage stdin / stdout and UNIX pipes

• Host: GitHub
• URL: https://github.com/cr0hn/python-pipes
• Owner: cr0hn
• License: bsd-3-clause
• Created: 2020-05-06T12:54:48.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2020-05-20T10:04:18.000Z (over 4 years ago)
• Last Synced: 2024-10-06T19:34:45.183Z (3 months ago)
• Topics: pipeline, stderr, stdin, stdout, unix
• Language: Python
• Size: 10.7 KB
• Stars: 5
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.rst
  • License: LICENSE

Awesome Lists containing this project

README

        
Python pipes

============

This projects allow to read stdin and detect if input data comes from a UNIX pipe and if the output is connected to a UNIX pipe.

Install

-------

.. code-block:: console

    > pip install python-pipes

How to use

----------

Basic example of a tool that read from info stdin:

.. code-block:: python

    # file: basic_example.py

    from python_pipes import read_stdin_lines

    def main():

        for is_stdin_pipe, is_stdout_pipe, line in read_stdin_lines():

            print("Input connected to pipe: ", is_stdin_pipe)

            print("Output  connected to pipe: ", is_stdout_pipe)

            print("Line read: ", line)

    if __name__ == '__main__':

        main()

Results depending of how to execute them:

.. code-block:: console

    $ python basic_example.py

    Input connected to pipe:  False

    Output  connected to pipe:  False

    Line read:  None

    $

    $ echo "hello" | python basic_example.py

    Input connected to pipe:  True

    Output  connected to pipe:  False

    Line read:  hello

    $

    $ echo "hello" | python basic_example.py | awk '{print $0}'

    Input connected to pipe:  True

    Output  connected to pipe:  True

    Line read:  hello