parse paystubs and optionally convert tax/gross pay to another currency

parse_paystub.py

#! /usr/bin/env python3

import os
import argparse
import json
from exchangeratesapi import Api

def convert_pay(src_list):
    date = ''
    target_list = []
    for item in src_list:
        for k,v in item.items():
            date = k
            target_dict = {date: {}}
            target_gross = v['grossAmount'] * v['dailyRate']
            target_tax = v['fedTax'] * v['dailyRate']
            target_dict[date]['grossAmount'] = round(target_gross, 3)
            target_dict[date]['fedTax'] = round(target_tax, 3)
            target_dict[date]['dailyRate'] = v['dailyRate']
            target_list.append(target_dict)
    return target_list

def get_pay(year, file_list, args, api):
    date = ''
    src_list = []
    for f in file_list:
        path = year + '/' + f
        with open(path) as json_file:
            data = json.load(json_file)
            statement = data['payStatement']
            date = statement['payDate']
            src_dict = {date: {}}
            src_dict[date]['netAmount'] = statement['netPayAmount']['amountValue']
            src_dict[date]['grossAmount'] = statement['grossPayAmount']['amountValue']
            dailyRate = api.get_rate('USD', target=args.target, start_date=date)
            # dailyRate = 107.999
            src_dict[date]['dailyRate'] = round(dailyRate, 3)
            for item in statement['deductionCategoryDetails']:
                if "Taxes" in item['deductionCategoryCodeName']:
                    src_dict[date]['fedTax'] = item['deductionCategoryTotalPeriodAmount']['amountValue'] * -1
        src_list.append(src_dict)
    return src_list

def get_file_list(year):
    file_list = []
    for root, dirs, files in os.walk(year):
        for f in files:
            if f.endswith("json"):
                file_list.append(f)
    return file_list

def main():
    parser = argparse.ArgumentParser(description="parse json paystubs")
    parser.add_argument('-y', '--year', help='Year to parse')
    parser.add_argument('-s', '--source', help='Source Currency')
    parser.add_argument('-t', '--target', help='Target Currency')

    args = parser.parse_args()
    api = Api()
    year = args.year
    file_list = get_file_list(year)

    src_list = get_pay(year, file_list, args, api)
    target_pay = convert_pay(src_list)
    if args.target == args.source:
        for item in src_list:
            print(item)
    else:
        for item in target_pay:
            print(item)

if __name__ == "__main__":
    main()