Some of you might know this script, it's called hash-identifier. When it is run the user is prompted to enter a hash. I want to pass the hash as a command line argument so that the script can be executed like that:
hash-identifier d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f I found out that I need to import sys and getopt but I have never used python before so any suggestions would be helpful.
the preferred method is to use argparse:
#!/usr/bin/env python import argparse if __name__ == "__main__": parser = argparse.ArgumentParser(description="Does something with a hash"); parser.add_argument("hash", metavar="HASH", help="the hash to do things with?"); args = parser.parse_args(); hash = args.hash; # Use the hash... print(hash); But using argparse might be a bit overkill for your needs, it may be simpler for you to do this:
#!/usr/bin/env python import sys if __name__ == "__main__": if len(sys.argv) != 2: # first is program name, second is argument print("USAGE: %s HASH"%(sys.argv[0],)); sys.exit(); hash = sys.argv[1]; # Use the hash... print(hash); Ok, after I imported sys, the only thing I need to do is pass the sys.argv to the variable being printed. Example:
variable = sys.argv print variable You can either use sys.argv[0] to get the first command line argument to the script. Or the argparse module if you want more options.
