I wrote a script that pulls all the cards in my food expenses list that are separated by months. I then extract all the numbers and log the sum to a file. Later I plan on graphing my monthly expenses and the names.#!/usr/bin/pythonfrom trollop import TrelloConnectionimport logging # Lots of issues with Python3. Lots of unicode, string errors, Just switched to # py2. should try to use dicts for {name: cost} and to  practice using dicts # TODO: Data Visualization, Error/exception handling, appending to log for running total# TODO: clean up code, get feedback on reddit, maybe use args for spec params# TODO: set up cron job to run every monthapi_key = '####' # TRELLO_API_KEYtoken = '####'# idBoard': '577b17583e5d17ee55b20e44',# idList': '577b17583e5d17ee55b20e45',# Set up basic logginglogging.basicConfig(format='%(levelname)s %(message)s',    level=logging.INFO, filename='trello_expenses.log', filemode='w')# Establish connectionconn = TrelloConnection(api_key, token)months = ['January', 'February', 'July', 'August', \          'September','October','November', 'December']# Get expenses board via IDlogging.info(Iterating through boards...)# for board in conn.me.boards:#     # logging.info(id: {}.format(each._id))#     # print uboard name: {0}, board id {1} . format( board.name, board._id )  #     logging.info (uboard name: {0}, board id {1}.\#                     format( board.name, board._id ))  # for each_card in conn.me.boards[2].cards:#     print u{0},{1},{2}.format(each_card._id, each_card.url,each_card.desc)  def main():    total = 0.0    costs = list()    names = list()    # get first index i.e the list im currently working on    board = conn.get_board('BE89pW61')    board_lists = board.lists    current = board_lists[0]    # Get all lists  names and ids in board    for entry in board_lists:        if 'august' in entry.name.lower():            # print u'List name: {0} list id: {1}'.format (entry.name, entry._id)            for cards in entry.cards:                name, cost =  cards.name.split('-')                costs.append(float (cost) )                # print cards.name            # print costs    total = sum (costs)    print 'total is {}'.format( total )if __name__=='__main__':    main()
Trello list scraper that extracts all numbers from boards and logs the sum
python
It is good to see that you are using the if __name__=='__main__': guard. However, I think you are doing a bit too much in your main and I would make a get_total_month function like this:...def get_total_month(month, board_lists):    costs = 0    month = month.lower()    for entry in board_lists:        if month in entry.name.lower():            for card in entry.cards:                costs += float(card.name.split('-')[1])    return costsdef main():    board = conn.get_board('BE89pW61')    total = get_total_month('august', board.lists)    print 'total is {}'.format(total)This way it will be easier to incorporate for example something like:totals_per month = [get_total_month(month, boards.lists) for month in months]which is then easy to plot e.g. with matplotlib:import matplotlib.pyplot as plt...totals = [get_total_month(month, boards.lists) for month in months]months = range(len(months))plt.plot(months, totals)plt.show()Adding the actual names of the month (and maybe also their year) is a bit more involved, but you can have a look at the examples here and here.Regarding whitespace, try to stick to one convention, preferentially the one set by pythons offical style-guie, PEP8. This means in particular not writing sum (total) or float( entry ), but sum(total) and float(entry).