TypeError: get_formatted_name() missing 1 required positional argument: 'last_name'

[buran]

@hbknjr - this is not so good solution as it (i) does not gurantee the order in which arguments were supplied (ii) the number of arguments, e.g.
get_formated_name('Hooker', 'Lee', 'John')
get_formated_name('Hooker', 'Lee', 'John', Jimi', 'Hendix')
you need to put efforts when parsing args

a similar, but in my opinion better solution is to force using keyword arguments (only python3)

def full_name(*, first_name=None, middle_name=None, last_name=None):
    names = (first_name, middle_name, last_name)
    return ' '.join(name for name in names if name)

print(full_name(first_name='john', middle_name='lee', last_name='hooker'))
print(full_name(first_name='jimi', last_name='hendrix'))
print(full_name(first_name='madonna'))
print(full_name('john', 'lennon'))

Output:
john lee hooker
jimi hendrix
madonna
Traceback (most recent call last):
  File "example.py", line 8, in <module>
    print(full_name('john', 'lennon'))
TypeError: full_name() takes 0 positional arguments but 2 were given