PYTHON

python arguments

import sys

print ("the script has the name %s" % (sys.argv[0])

python command line keyword arguments

import argparse

if __name__ == '__main__':
   parser = argparse.ArgumentParser()
   parser.add_argument('--arg1')
   parser.add_argument('--arg2')
   args = parser.parse_args()

   print(args.arg1)
   print(args.arg2)

   my_dict = {'arg1': args.arg1, 'arg2': args.arg2}
   print(my_dict)

keyword arguments python

def calculate(n, **kwargs):
	n += kwargs["add"]
	n *= kwargs["multiply"]
	return n

print(calculate(3, add=3, multiply=5)) # (3+3)*5 = 30

python keyword arguments

#in python, arguments can be used using keywords
#the format is:
def function(arg,kwarg='default'):
    return [arg,kwarg]

keyword argument python

complex(real=3, imag=5)
complex(**{'real': 3, 'imag': 5})

keyword only arguments python

def fn(*, a): # only keyword arguments
    print(a)

# fn(1) # error
fn(a=1) 

example for keyword argument in python

# function with 2 keyword arguments
def student(name, age):
    print('Student Details:', name, age)

# default function call
student('Jessa', 14)

# both keyword arguments
student(name='Jon', age=12)

# 1 positional and 1 keyword
student('Donald', age=13)