def parrot(voltage, state='a stiff', action='voom', type='Norwegian Blue'):
print "-- This parrot wouldn’t", action
print "if you put", voltage, "volts through it."
print "-- Lovely plumage, the", type
print "-- It’s", state, "!"
I started learning python. I can call this function using parrot(5,'dead') and parrot(voltage=5). But why can't I call with the same function with parrot(voltage=5, 'dead')?
You can't use a non-keyword argument ('arg_value') after a keyword argument (arg_name='arg_value'). This is because of how Python is designed.
See here: http://docs.python.org/tutorial/controlflow.html#keyword-arguments
Therefore, you must enter all arguments following a keyword-argument as keyword-arguments...
# instead of parrot(voltage=5, 'dead'):
parrot(voltage=5, state='dead')
# or:
parrot(5, state='dead')
# or:
parrot(5, 'dead')
