Python Tutorial
Python program gets input values and operation type as python arguments as key and value pair using argparse module. Performs arithmetical operations and returns the result.
import argparse import sys # Gets the user input as dictionary. def parse_opts(argv): parser = argparse.ArgumentParser( description='Interactive tool') parser.add_argument('-a', '--val1', metavar='VALUE 1', help="""value 1.""", default='0') parser.add_argument('-b', '--val2', metavar='VALUE 2', help="""value 2.""", default='0') parser.add_argument('-o', '--operation', metavar='ARITHMETIC OPERATION', help="""arith operation.""", default='0') opts = parser.parse_args(argv[1:]) return opts def arith_operations(a, b, op): if op == '+': return float(a) + float(b) elif op == '-': return float(a) - float(b) elif op == '*': return float(a) * float(b) elif op == '/': return float(a) / float(b) return 0 if __name__ == '__main__': opts = parse_opts(sys.argv) result = arith_operations(opts.val1, opts.val2, opts.operation) print('result (' + opts.val1 + ' '+ opts.operation + ' ' + opts.val2 + ')' + ': ' + str(result))
$ python arith_operations.py --val1 10 --val2 5 --operation '+' result (10 + 5): 15.0 $ python arith_operations.py --val1 10 --val2 5 --operation '-' result (10 - 5): 5.0 $ python arith_operations.py --val1 10 --val2 5 --operation '*' result (10 * 5): 50.0 $ python arith_operations.py --val1 10 --val2 5 --operation '/' result (10 / 5): 2.0
Python Tutorial
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