diff options
Diffstat (limited to 'Lib/heapq.py')
| -rw-r--r-- | Lib/heapq.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/heapq.py b/Lib/heapq.py index 0a83b76b46..c13d6500b6 100644 --- a/Lib/heapq.py +++ b/Lib/heapq.py @@ -354,6 +354,10 @@ def nsmallest(n, iterable, key=None): Equivalent to: sorted(iterable, key=key)[:n] """ + if key is None: + it = izip(iterable, count()) # decorate + result = _nsmallest(n, it) + return map(itemgetter(0), result) # undecorate in1, in2 = tee(iterable) it = izip(imap(key, in1), count(), in2) # decorate result = _nsmallest(n, it) @@ -365,6 +369,10 @@ def nlargest(n, iterable, key=None): Equivalent to: sorted(iterable, key=key, reverse=True)[:n] """ + if key is None: + it = izip(iterable, imap(neg, count())) # decorate + result = _nlargest(n, it) + return map(itemgetter(0), result) # undecorate in1, in2 = tee(iterable) it = izip(imap(key, in1), imap(neg, count()), in2) # decorate result = _nlargest(n, it) |