from distutils.dep_util import newer_group
# yes, this is was almost entirely copy-pasted from
# 'newer_pairwise()', this is just another convenience
# function.
def newer_pairwise_group(sources_groups, targets):
"""Walk both arguments in parallel, testing if each source group is newer
than its corresponding target. Returns a pair of lists (sources_groups,
targets) where sources is newer than target, according to the semantics
of 'newer_group()'.
"""
if len(sources_groups) != len(targets):
raise ValueError("'sources_group' and 'targets' must be the same length")
# build a pair of lists (sources_groups, targets) where source is newer
n_sources = []
n_targets = []
for i in range(len(sources_groups)):
if newer_group(sources_groups[i], targets[i]):
n_sources.append(sources_groups[i])
n_targets.append(targets[i])
return n_sources, n_targets
