8ab31ccce5629d57ad6ca671a90c39d54fdda568,pudl/helpers.py,,simplify_columns,#Any#,400

Before Change

     - Stripping leading and trailing whitespace.
    
    df.columns = df.columns.str.replace("[^0-9a-zA-Z]+", " ")
    df.columns = df.columns.str.strip().str.lower().str.replace(r"\s+", " ")
    df.columns = df.columns.str.replace(" ", "_")
    return df

After Change

     - Compacting internal whitespace.
     - Stripping leading and trailing whitespace.
    
    df.columns = (
        df.columns.str
          .replace("[^0-9a-zA-Z]+", " ").str
          .strip().str
          .lower().str
          .replace(r"\s+", " ").str
          .replace(" ", "_")
    )
    return df

Instances