use args in python code example

Example 1: python *args

# concatenate_keys.py
def concatenate(**kwargs):
    result = ""
    # Iterating over the keys of the Python kwargs dictionary
    for arg in kwargs:
        result += arg
    return result

print(concatenate(a="Real", b="Python", c="Is", d="Great", e="!"))

Example 2: python argsort

def g(seq):
    # http://stackoverflow.com/questions/3382352/equivalent-of-numpy-argsort-in-basic-python/3383106#3383106
    #lambda version by Tony Veijalainen
    return [x for x,y in sorted(enumerate(seq), key = lambda x: x[1])]