def preprocessing(file_name: str):
    fish_df = pd.read_csv(file_name)
    fish_df = pd.get_dummies(fish_df, columns=['Species'], prefix='Species')
    return fish_df
def preprocessing(file_name: str):
    fish_df = pd.read_csv(file_name)
    fish_df = pd.get_dummies(fish_df, columns=['Species'], prefix='Species')
    return fish_df