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some py3 fixes
author Jeff Hammel <k0scist@gmail.com>
date Tue, 29 May 2018 15:28:41 -0700
parents b4a3e8bbe095
children
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 {{description}}
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6 """
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7
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8 # imports
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9 import argparse
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10 import os
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11 import subprocess
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12 import sys
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13 import time
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15 # python requirements
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16 # (key, value) = (module, PyPI name)
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17 requirements = ()
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18 for module, package in requirements:
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19 try:
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20 globals()[module] = __import__(module)
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21 except ImportError:
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22 # install requirement and try again
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23 subprocess.check_call(['pip', 'install', package])
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24 args = [sys.executable] + sys.argv
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25 os.execl(sys.executable, *args)
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27 # module globals
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28 __all__ = ['main', 'Parser']
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29 here = os.path.dirname(os.path.realpath(__file__))
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31 try:
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32 # python 2
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33 string = (str, unicode)
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34 except NameError:
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35 # python 3
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36 string = (str, )
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39 def ensure_dir(directory):
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40 """ensure a directory exists"""
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41 if os.path.exists(directory):
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42 if not os.path.isdir(directory):
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43 raise OSError("Not a directory: '{}'".format(directory))
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44 return directory
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45 os.makedirs(directory)
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46 return directory
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48
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49 class Parser(argparse.ArgumentParser):
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50 """CLI option parser"""
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51
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52 def __init__(self, **kwargs):
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53 kwargs.setdefault('formatter_class', argparse.RawTextHelpFormatter)
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54 kwargs.setdefault('description', __doc__)
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55 argparse.ArgumentParser.__init__(self, **kwargs)
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56 self.add_argument('--monitor', dest='monitor',
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57 type=float, metavar='SLEEP',
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58 help="run in monitor mode")
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59 self.options = None
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60
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61 def parse_args(self, *args, **kw):
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62 options = argparse.ArgumentParser.parse_args(self, *args, **kw)
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63 self.validate(options)
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64 self.options = options
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65 return options
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67 def validate(self, options):
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68 """validate options"""
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71 def main(args=sys.argv[1:]):
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72 """CLI"""
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74 # parse command line options
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75 parser = Parser()
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76 options = parser.parse_args(args)
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78 try:
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79 while True:
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80 if options.monitor:
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81 time.sleep(options.monitor)
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82 else:
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83 break
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84 except KeyboardInterrupt:
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85 pass
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88 if __name__ == '__main__':
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89 main()
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