import sys
import pandas as pd


# input_file = sys.argv[1]
# output_file = sys.argv[2]
input_file = "supplier_data.csv"
output_file = "./output_files/5pandas_value_matches_pattern.csv"

data_frame = pd.read_csv(input_file)

data_frame_value_matches_pattern = data_frame.loc[data_frame['Invoice Number']
    .str.startswith("001-"), :]

data_frame_value_matches_pattern.to_csv(output_file, index=False)