Concatenate csv files using pandas DataFrames into one file

concat_df.py

#!/usr/bin/env python2
'''
Concatenate csv files using pandas DataFrames into one file

:author: Dustin Dorroh <[email protected]>
'''
import argparse
import pandas as pd
import os

def parse_args():
    """
    Use argparse module. Santize options and return the parser.
    
    :return:
        args
    """
    parser = argparse.ArgumentParser(description="Concatenate DataFrame csv files into one file")
    parser.add_argument("-i", "--input-files", dest="input_files", nargs='*', help="Input CSV files",required=True)
    parser.add_argument("-o", "--output-file", dest="output_file", help="Output CSV file", type=str,required=True)

    return parser.parse_args()

if __name__ == "__main__":
    args = parse_args()
    print(args)
    df = pd.concat(map(pd.read_csv,args.input_files))
    df.to_csv(args.output_file,index=False)