How do I run Python script using arguments in windows command line

Question

This is my python hello.py script:

def hello(a,b):     print "hello and that's your sum:"     sum=a+b     print sum     import sys  if __name__ == "__main__":     hello(sys.argv[2]) 

The problem is that it can't be run from the windows command line prompt, I used this command:

C:\Python27>hello 1 1 

But it didn't work unfortunately, may somebody please help?

Answer 1

• import sys out of hello function.
• arguments should be converted to int.
• String literal that contain ' should be escaped or should be surrouned by ".
• Did you invoke the program with python hello.py <some-number> <some-number> in command line?

---

import sys  def hello(a,b):     print "hello and that's your sum:", a + b  if __name__ == "__main__":     a = int(sys.argv[1])     b = int(sys.argv[2])     hello(a, b) 

Answer 2

I found this thread looking for information about dealing with parameters; this easy guide was so cool:

import argparse  parser = argparse.ArgumentParser(description='Script so useful.') parser.add_argument("--opt1", type=int, default=1) parser.add_argument("--opt2")  args = parser.parse_args()  opt1_value = args.opt1 opt2_value = args.opt2 

run like:

python myScript.py --opt2 = 'hi'