rename_files function

bond/bond.py

@@ -1,15 +1,23 @@
 """Main module."""
 
+import pathlib 
+
 class BOnD(object):
 
  def __init__(self, data_root):
  self.path = data_root
-
+ 
  def fieldmaps_ok(self):
  pass
 
- def rename_files(self, pattern, replacement):
- pass
+ def rename_files(self, path_to_dir, pattern, replacement):
+ for path in pathlib.Path(path_to_dir).iterdir():
+ if path.is_file():
+ old_name = path.stem 
+ old_ext = path.suffix
+ directory = path.parent
+ new_name = old_name.replace(pattern, replacement) + old_ext
+ path.rename(pathlib.Path(directory, new_name))
 
  def find_param_sets(self, pattern):
  pass