Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/libcst/_parser/custom_itertools.py: 67%

1# Copyright (c) Meta Platforms, Inc. and affiliates. 

2# 

3# This source code is licensed under the MIT license found in the 

4# LICENSE file in the root directory of this source tree. 

5 

6from itertools import zip_longest 

7from typing import Iterable, Iterator, TypeVar 

8 

9_T = TypeVar("_T") 

10 

11 

12# https://docs.python.org/3/library/itertools.html#itertools-recipes 

13def grouper(iterable: Iterable[_T], n: int, fillvalue: _T = None) -> Iterator[_T]: 

14 "Collect data into fixed-length chunks or blocks" 

15 # grouper('ABCDEFG', 3, 'x') --> ABC DEF Gxx" 

16 args = [iter(iterable)] * n 

17 return zip_longest(*args, fillvalue=fillvalue)