Get python object from path

utils.py

def get_by_path(path):
    '''
    get python object from path
    >>> get_by_path('os.path.join')
    <function join at ...>
    '''
    spl = path.split('.')
    mod = None
    for n, s in enumerate(spl, start=1):
        try:
            mod_path = '.'.join(spl[:-n])

            if not mod_path:
                return None

            mod = __import__(mod_path, globals=globals(), locals=locals())
            attrs = spl[-n:]
            break
        except ImportError:
            pass

    for s in spl[1:-n]:
        mod = getattr(mod, s)

    attr = mod
    for a in attrs:
        attr = getattr(attr, a)

    return attr