Upgrade Python syntax with pyupgrade https://github.com/asottile/pyupgrade

Author: hugovk

gitdb/db/pack.py

@@ -148,7 +148,7 @@ def update_cache(self, force=False):
         # packs are supposed to be prefixed with pack- by git-convention
         # get all pack files, figure out what changed
         pack_files = set(glob.glob(os.path.join(self.root_path(), "pack-*.pack")))
-        our_pack_files = set(item[1].pack().path() for item in self._entities)
+        our_pack_files = {item[1].pack().path() for item in self._entities}
 
         # new packs
         for pack_file in (pack_files - our_pack_files):

gitdb/db/ref.py

@@ -49,7 +49,7 @@ def _update_dbs_from_ref_file(self):
         # END handle alternates
 
         ref_paths_set = set(ref_paths)
-        cur_ref_paths_set = set(db.root_path() for db in self._dbs)
+        cur_ref_paths_set = {db.root_path() for db in self._dbs}
 
         # remove existing
         for path in (cur_ref_paths_set - ref_paths_set):

gitdb/test/lib.py

@@ -86,7 +86,7 @@ def wrapper(self):
             try:
                 return func(self, path)
             except Exception:
-                sys.stderr.write("Test %s.%s failed, output is at %r\n" % (type(self).__name__, func.__name__, path))
+                sys.stderr.write("Test {}.{} failed, output is at {!r}\n".format(type(self).__name__, func.__name__, path))
                 keep = True
                 raise
         finally: