+
−#!/usr/bin/env python
+
−# -*- coding: utf-8 -*-
+
−
+
−"""
+
−plot data
+
−
+
−Usage::
+
−
+
−  plot foo.csv
+
−
+
−Generates plots of all columns of foo versus the first column.
+
−The title is foo.csv unless overridden with ``--title``.
+
−"""
+
−
+
−# imports
+
−import argparse
+
−import os
+
−import sys
+
−
+
−# module globals
+
−__all__ = ['main', 'PlotParser']
+
−string = (str, unicode)
+
−
+
−def ensure_dir(directory):
+
−    """ensure a directory exists"""
+
−    if os.path.exists(directory):
+
−        assert os.path.isdir(directory)
+
−        return directory
+
−    os.makedirs(directory)
+
−    return directory
+
−
+
−
+
−class PlotParser(argparse.ArgumentParser):
+
−    """CLI option parser"""
+
−
+
−    def __init__(self, **kwargs):
+
−        kwargs.setdefault('description', __doc__)
+
−        argparse.ArgumentParser.__init__(self, **kwargs)
+
−        self.options = None
+
−
+
−    def parse_args(self, *args, **kw):
+
−        options = argparse.ArgumentParser.parse_args(self, *args, **kw)
+
−        self.validate(options)
+
−        self.options = options
+
−        return options
+
−
+
−    def validate(self, options):
+
−        """validate options"""
+
−
+
−
+
−def main(args=sys.argv[1:]):
+
−    """CLI"""
+
−
+
−    # parse command line options
+
−    parser = PlotParser()
+
−    options = parser.parse_args(args)
+
−
+
−
+
−if __name__ == '__main__':
+
−    main()
+
−