Apply suggestions from code review

Co-authored-by: Jerome Kelleher <[email protected]>

Author: clwgg

python/tskit/tables.py

@@ -2881,10 +2881,10 @@ def __getstate__(self):
         return self.asdict()
 
     @classmethod
-    def load(cls, file_or_path, skip_tables=False):
+    def load(cls, file_or_path, *, skip_tables=False):
         file, local_file = util.convert_file_like_to_open_file(file_or_path, "rb")
         ll_tc = _tskit.TableCollection(1)
-        ll_tc.load(file, skip_tables=bool(skip_tables))
+        ll_tc.load(file, skip_tables=skip_tables)
         tc = TableCollection(1)
         tc._ll_tables = ll_tc
         return tc

python/tskit/trees.py

@@ -2845,7 +2845,7 @@ def generate_random_binary(
         )
 
 
-def load(file, skip_tables=False):
+def load(file, *, skip_tables=False):
     """
     Loads a tree sequence from the specified file object or path. The file must be in the
     :ref:`tree sequence file format <sec_tree_sequence_file_format>` produced by the
@@ -3510,11 +3510,11 @@ def aslist(self, **kwargs):
         return [tree.copy() for tree in self.trees(**kwargs)]
 
     @classmethod
-    def load(cls, file_or_path, skip_tables=False):
+    def load(cls, file_or_path,  *, skip_tables=False):
         file, local_file = util.convert_file_like_to_open_file(file_or_path, "rb")
         try:
             ts = _tskit.TreeSequence()
-            ts.load(file, skip_tables=bool(skip_tables))
+            ts.load(file, skip_tables=skip_tables)
             return TreeSequence(ts)
         except exceptions.FileFormatError as e:
             # TODO Fix this for new file semantics