Function _count_elements

Lib/collections/__init__.py:540–544

Tally elements from the iterable.

(mapping, iterable)

########################################################################

def _count_elements(mapping, iterable):
    'Tally elements from the iterable.'
    mapping_get = mapping.get
    for elem in iterable:
        mapping[elem] = mapping_get(elem, 0) + 1

try:                                    # Load C helper function if available
    from _collections import _count_elements