diff options
Diffstat (limited to 'Lib/distutils/dep_util.py')
-rw-r--r-- | Lib/distutils/dep_util.py | 71 |
1 files changed, 35 insertions, 36 deletions
diff --git a/Lib/distutils/dep_util.py b/Lib/distutils/dep_util.py index 97812ed..4b93ed0 100644 --- a/Lib/distutils/dep_util.py +++ b/Lib/distutils/dep_util.py @@ -14,14 +14,13 @@ from distutils.errors import DistutilsFileError def newer (source, target): """Return true if 'source' exists and is more recently modified than - 'target', or if 'source' exists and 'target' doesn't. Return - false if both exist and 'target' is the same age or younger than - 'source'. Raise DistutilsFileError if 'source' does not - exist.""" - - if not os.path.exists (source): + 'target', or if 'source' exists and 'target' doesn't. Return false if + both exist and 'target' is the same age or younger than 'source'. + Raise DistutilsFileError if 'source' does not exist. + """ + if not os.path.exists(source): raise DistutilsFileError, "file '%s' does not exist" % source - if not os.path.exists (target): + if not os.path.exists(target): return 1 from stat import ST_MTIME @@ -35,20 +34,20 @@ def newer (source, target): def newer_pairwise (sources, targets): """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): + 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" # 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]) + 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) @@ -56,20 +55,20 @@ def newer_pairwise (sources, targets): def newer_group (sources, target, missing='error'): - """Return true if 'target' is out-of-date with respect to any - file listed in 'sources'. In other words, if 'target' exists and - is newer than every file in 'sources', return false; otherwise - return true. 'missing' controls what we do when a source file is - missing; the default ("error") is to blow up with an OSError from - inside 'stat()'; if it is "ignore", we silently drop any missing - source files; if it is "newer", any missing source files make us - assume that 'target' is out-of-date (this is handy in "dry-run" - mode: it'll make you pretend to carry out commands that wouldn't - work because inputs are missing, but that doesn't matter because - you're not actually going to run the commands).""" - + """Return true if 'target' is out-of-date with respect to any file + listed in 'sources'. In other words, if 'target' exists and is newer + than every file in 'sources', return false; otherwise return true. + 'missing' controls what we do when a source file is missing; the + default ("error") is to blow up with an OSError from inside 'stat()'; + if it is "ignore", we silently drop any missing source files; if it is + "newer", any missing source files make us assume that 'target' is + out-of-date (this is handy in "dry-run" mode: it'll make you pretend to + carry out commands that wouldn't work because inputs are missing, but + that doesn't matter because you're not actually going to run the + commands). + """ # If the target doesn't even exist, then it's definitely out-of-date. - if not os.path.exists (target): + if not os.path.exists(target): return 1 # Otherwise we have to find out the hard way: if *any* source file @@ -77,9 +76,9 @@ def newer_group (sources, target, missing='error'): # we can immediately return true. If we fall through to the end # of the loop, then 'target' is up-to-date and we return false. from stat import ST_MTIME - target_mtime = os.stat (target)[ST_MTIME] + target_mtime = os.stat(target)[ST_MTIME] for source in sources: - if not os.path.exists (source): + if not os.path.exists(source): if missing == 'error': # blow up when we stat() the file pass elif missing == 'ignore': # missing source dropped from @@ -102,13 +101,13 @@ def newer_group (sources, target, missing='error'): def make_file (src, dst, func, args, verbose=0, update_message=None, noupdate_message=None): """Makes 'dst' from 'src' (both filenames) by calling 'func' with - 'args', but only if it needs to: i.e. if 'dst' does not exist or - 'src' is newer than 'dst'.""" - - if newer (src, dst): + 'args', but only if it needs to: i.e. if 'dst' does not exist or 'src' + is newer than 'dst'. + """ + if newer(src, dst): if verbose and update_message: print update_message - apply (func, args) + apply(func, args) else: if verbose and noupdate_message: print noupdate_message |