diff options
Diffstat (limited to 'Doc/library/itertools.rst')
| -rw-r--r-- | Doc/library/itertools.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst index 618cf7d..634b909 100644 --- a/Doc/library/itertools.rst +++ b/Doc/library/itertools.rst @@ -290,7 +290,7 @@ loops that truncate the stream. class groupby(object): # [k for k, g in groupby('AAAABBBCCDAABBB')] --> A B C D A B - # [(list(g)) for k, g in groupby('AAAABBBCCD')] --> AAAA BBB CC D + # [list(g) for k, g in groupby('AAAABBBCCD')] --> AAAA BBB CC D def __init__(self, iterable, key=None): if key is None: key = lambda x: x @@ -591,8 +591,8 @@ which incur interpreter overhead. return map(function, count(start)) def nth(iterable, n): - "Returns the nth item or empty list" - return list(islice(iterable, n, n+1)) + "Returns the nth item or None" + return next(islice(iterable, n, None), None) def quantify(iterable, pred=bool): "Count how many times the predicate is true" |