Janitor clean names in Python

clean_names.py

def clean_names(cols):
    current_cols = cols
    new_cols = []
    for c in range(0, len(current_cols)):
        new_cols.append(
            current_cols[c].lower().replace(' ', '_').replace('(', '').replace(')', '')
        )
    return(new_cols)
    
# we use the .columns method to access the column names
# this applies to both polars and pandas
#df.columns = clean_names(df.columns)
#print(df.head())