How can I pass options without any argument and without passing any default argument?
For example:
./log.py --ipv4
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2 Answers
parser.add_option("--ipv4", action="store_true", dest="ipv4")
See http://docs.python.org/2/library/optparse.html#handling-boolean-flag-options
1 Comment
AJP
Why does this only have one up vote (mine!... and yours too @Murkantilism ) ?
While lajarre's answer is correct, it's important to note outparse is considered deprecated.
I suggest using the newer argparse module instead.
So your code would look like:
import argparse
parser = argparse.ArgumentParser(description='This is my description')
parser.add_argument('--ipv4', action='store_true', dest='ipv4')
Using -foo or --foo flags makes the arguement optional. See this documentation for more about optional arguments.
Edit: And here's the specific documentation for the add_argument method.
Edit 2: Additionally, if you wanted to accept either -foo or --foo you could do
parser.add_argument('-ipv4', '--ipv4', action='store_true', dest='ipv4')
