Replace list()/dict() with literals

Literals are always faster and conventional in modern Python style.

codespell_lib/_codespell.py

@@ -237,7 +237,7 @@ class NewlineHelpFormatter(argparse.HelpFormatter):
 
     def _split_lines(self, text, width):
         parts = text.split('\n')
-        out = list()
+        out = []
         for pi, part in enumerate(parts):
             # Eventually we could allow others...
             indent_start = '- '
@@ -800,7 +800,7 @@ def main(*args):
         dictionaries = options.dictionary
     else:
         dictionaries = ['-']
-    use_dictionaries = list()
+    use_dictionaries = []
     for dictionary in dictionaries:
         if dictionary == "-":
             # figure out which builtin dictionaries to use
@@ -824,7 +824,7 @@ def main(*args):
                 parser.print_help()
                 return EX_USAGE
             use_dictionaries.append(dictionary)
-    misspellings = dict()
+    misspellings = {}
     for dictionary in use_dictionaries:
         build_dict(dictionary, misspellings, ignore_words)
     colors = TermColors()

codespell_lib/tests/test_dictionary.py

@@ -11,7 +11,7 @@
 from codespell_lib._codespell import _builtin_dictionaries
 from codespell_lib._codespell import supported_languages
 
-spellers = dict()
+spellers = {}
 
 try:
     import aspell
@@ -28,7 +28,7 @@
             'aspell not found, but not required, skipping aspell tests. Got '
             'error during import:\n%s' % (exp,))
 
-global_err_dicts = dict()
+global_err_dicts = {}
 global_pairs = set()
 
 # Filename, should be seen as errors in aspell or not
@@ -50,7 +50,7 @@ def test_dictionaries_exist():
 @fname_params
 def test_dictionary_formatting(fname, in_aspell, in_dictionary):
     """Test that all dictionary entries are valid."""
-    errors = list()
+    errors = []
     with open(fname, 'rb') as fid:
         for line in fid:
             err, rep = line.decode('utf-8').split('->')
@@ -210,7 +210,7 @@ def test_error_checking_in_aspell(err, rep, err_aspell, rep_aspell, match):
 @pytest.mark.dependency(name='dictionary loop')
 def test_dictionary_looping(fname, in_aspell, in_dictionary):
     """Test that all dictionary entries are valid."""
-    this_err_dict = dict()
+    this_err_dict = {}
     short_fname = op.basename(fname)
     with open(fname, 'rb') as fid:
         for line in fid: