Python Argparse: Issue with optional arguments which are negative numbers

Question

I\'m having a small issue with argparse. I have an option xlim which is the xrange of a plot. I want to be able to pass numbers like <

Answer 1

Here is the code that I use. (It is similar to jeremiahbuddha's but it answers the question more directly since it deals with negative numbers.)

Put this before calling argparse.ArgumentParser()

for i, arg in enumerate(sys.argv):
  if (arg[0] == '-') and arg[1].isdigit(): sys.argv[i] = ' ' + arg