diff options
| -rw-r--r-- | Lib/distutils/util.py | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/Lib/distutils/util.py b/Lib/distutils/util.py index b20f5be..03c0c88 100644 --- a/Lib/distutils/util.py +++ b/Lib/distutils/util.py @@ -100,22 +100,23 @@ def newer (source, target): def newer_pairwise (sources, targets): - """Walk two filename lists in parallel, testing if each 'target' is - up-to-date relative to its corresponding 'source'. If so, both - are deleted from their respective lists. Return a list of tuples - containing the deleted (source,target) pairs.""" + """Walk two filename lists in parallel, testing if each source is newer + than its corresponding target. Return a pair of lists (sources, + targets) where source is newer than target, according to the + semantics of 'newer()'.""" if len (sources) != len (targets): raise ValueError, "'sources' and 'targets' must be same length" - goners = [] - for i in range (len (sources)-1, -1, -1): - if not newer (sources[i], targets[i]): - goners.append ((sources[i], targets[i])) - del sources[i] - del targets[i] - goners.reverse() - return goners + # build a pair of lists (sources, targets) where source is newer + n_sources = [] + n_targets = [] + for i in range (len (sources)): + if newer (sources[i], targets[i]): + n_sources.append (sources[i]) + n_targets.append (targets[i]) + + return (n_sources, n_targets) # newer_pairwise () |