Use literal syntax instead of function calls to create data structure

Signed-off-by: shubhendra <withshubh@gmail.com>

utils/downloads.py

@@ -88,7 +88,7 @@ class DownloadInfo: #pylint: disable=too-few-public-methods
             if name in self._passthrough_properties:
                 return self._section_dict.get(name, fallback=None)
             if name == 'hashes':
-                hashes_dict = dict()
+                hashes_dict = {}
                 for hash_name in (*self._hashes, 'hash_url'):
                     value = self._section_dict.get(hash_name, fallback=None)
                     if value:

utils/filescfg.py

@@ -177,7 +177,7 @@ def main():
         type=Path,
         metavar='PATH',
         action='append',
-        default=list(),
+        default=[],
         help=('File or directory to include in the root of the archive. Specify '
               'multiple times to include multiple different items. '
               'For zip files, these contents must only be regular files.'))

utils/patches.py

@@ -155,7 +155,7 @@ def merge_patches(source_iter, destination, prepend=False):
     destination must not already exist, unless prepend is True. If prepend is True, then
     the source patches will be prepended to the destination.
     """
-    series = list()
+    series = []
     known_paths = set()
     if destination.exists():
         if prepend: