TOC
What do *args and **kwargs mean in python function?
*args means we can pass an arbitrary number of arguments to the function;
Similarly, **kwargs allow we pass many key=value argument to the function;
*args
*args iterable:
def my_sum(*args):
result = 0
# Iterating over the Python args tuple
for x in args:
result += x
return result
print(my_sum(1, 2, 3))
# output: 6
The * is a unpacking operator;
def print_three_things(a, b, c):
print( 'a = {0}, b = {1}, c = {2}'.format(a,b,c))
mylist = ['aardvark', 'baboon', 'cat']
print_three_things(*mylist)
# output: a = aardvark, b = baboon, c = cat
**kwargs example
**kwargs iterable:
mynum = 1000
mystr = 'Hello World!'
print("{mystr} New-style formatting is {mynum}x more fun!".format(**locals()))
REFERENCE:
1.use-of-args-and-kwargs 2.python-kwargs-and-args
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