A simple command line program to calculate the SHA256 hash digest of a string input

hash_phrase.py

#!/usr/bin/env python
import argparse
import hashlib
import json

def sha256_hash(data):
    data_sha256 = hashlib.sha256(json.dumps(data, sort_keys=True)).hexdigest()
    return data_sha256

def main():
    parser = argparse.ArgumentParser(description="Calculate a SHA 256 hash from an input phrase")
    parser.add_argument('-i', '--input', type=str, required=True)
    args = parser.parse_args()

    print 'The input phrase is "%s"' % args.input
    print 'The SHA256 hash of that phrase is: %s' % sha256_hash(args.input)

if __name__ == '__main__':
    main()