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Tool to restart commands based on filesystem changes

Project Description


repython is a utility to run a command and then restart it based
on filesystem changes. It's useful for quickly testing changes to a
running program. For instance, Django uses a similar but more
sophisticated method to reload its source code when it detects
a change.

repython uses the pyinotify library to make monitoring for changes
efficient compared to just polling the filesystem.



* [pyinotify](
* [twiggy](

You can install the repython module using:

$ python install

repython is also available from the Cheeseshop:

$ pip install repython

Or using setuptools:

$ easy_install repython


Basic example:

$ python -m repython "python"

This would open the command in a subprocess and recursively monitor
the current working directory for any changed files matching the *.py
filename pattern (default behavior).

repython is not limited to running Python programs, so a command like
this should work as well:

$ python -m repython "ruby example.rb" -p "*.rb" "*.txt"

The `-p` or `--pattern` arguments determine which file changes
trigger restarting the run command.

The `-d` or `--directory` arguments allow monitoring other directories
than the current working directory. It can be used like this:

$ python -m repython "python" -d . ~/example

This command would make repython recursively monitor (i.e., including
subdirectories) both the working directory and the
`~/example` directory.

The `-v` or `--verbose` argument can be used to get more detailed
output from repython, and the `-q` or `--quiet` argument can be used
to suppress repython output.

For more details please see:

$ python -m repython --help

Known issues

[Python issue #9338]( causes the
argument order to be wrong in the generated usage instructions
(shown when using the `--help` argument). The `command` argument should
come before the optional arguments for the tool to work.

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