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| author | Raymond Hettinger <rhettinger@users.noreply.github.com> | 2023-07-03 20:38:38 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-07-03 20:38:38 (GMT) |
| commit | 77090370952307730ea71d68b848cce0dc8cbd83 (patch) | |
| tree | a157920d019294485579f7c08bf5cc312156037f | |
| parent | b4efdf8cda8fbbd0ca53b457d5f6e46a59348caf (diff) | |
| download | cpython-77090370952307730ea71d68b848cce0dc8cbd83.zip cpython-77090370952307730ea71d68b848cce0dc8cbd83.tar.gz cpython-77090370952307730ea71d68b848cce0dc8cbd83.tar.bz2 | |
Small speed-up for the convolve() recipe. (GH-106371)
| -rw-r--r-- | Doc/library/itertools.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst index 56d6599..a2d1798 100644 --- a/Doc/library/itertools.rst +++ b/Doc/library/itertools.rst @@ -1085,8 +1085,8 @@ The following recipes have a more mathematical flavor: kernel = tuple(kernel)[::-1] n = len(kernel) padded_signal = chain(repeat(0, n-1), signal, repeat(0, n-1)) - for window in sliding_window(padded_signal, n): - yield math.sumprod(kernel, window) + windowed_signal = sliding_window(padded_signal, n) + return map(math.sumprod, repeat(kernel), windowed_signal) def polynomial_from_roots(roots): """Compute a polynomial's coefficients from its roots. |