text: import os
  import pandas as pd
  
  column_name_mapping = {
      "Start_iViewX_micros": "start",
      "End_iViewX_micros": "end",
      "Location_X": "x",
      "Location_Y": "y",
      "Duration_micros": "duration",
  }
  
  
  def rewrite_df(df):
      try:
          df = df.rename(columns=column_name_mapping)
          df["duration"] = df["duration"] * 1000
          df["start"] = df["start"] * 1000
          df["end"] = df["end"] * 1000
      except Exception as e:
          print(df)
          raise e
      return df
  
  
  basepath = "../datasets/fractions/data"
  for file in os.listdir(basepath):
      with open(os.path.join(basepath, file)) as f:
          df = pd.read_csv(f, sep=",")
          rewritten_df = rewrite_df(df)
          rewritten_df.to_csv(f"../datasets/fractions/data/{file}")
  