<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
I'd like to create a python script that reads .CSV bank statements, that collates a list of people I have paid money to and the amount of money I have paid to them in the statement. I would like that data to be saved into a new .CSV file. Could you write me some code that would do that?<|im_end|>
<|im_start|>assistant
Sure! Here's an example of code that does what you described using the csv module in Python:

import csv

# Input file name
filename = "bank_statement.csv"

# Output file name
output_file = "payees.csv"

# Dictionary to store the payees and their total payment
payees = {}

# Read the input CSV file
with open(filename, "r") as file:
    reader = csv.DictReader(file)
    for row in reader:
        payee = row["Payee"]
        amount = float(row["Amount"])
        if payee in payees:
            payees[payee] += amount
        else:
            payees[payee] = amount

# Write the payee information to the output CSV file
with open(output_file, "w") as file:
    writer = csv.writer(file)
    writer.writerow(["Payee", "Total Payment"])
    for payee, amount in payees.items():
        writer.writerow([payee, amount])

This code assumes that the input .CSV file has a header row with the following columns: "Payee", "Amount". You can modify the code to fit your specific input file format.<|im_end|>
<|im_start|>user
Thanks you. This is very helpful!<|im_end|>
<|im_start|>assistant
I'm happy to have helped. If you have any other questions, please feel free to ask.<|im_end|>
<|im_start|>user
The following list describes the schema for each column:

* "Transaction Date" - an ISO 8601 date
* "Account" - friendly name for the account from which funds were withdrawn (e.g. "Checking")
* "Payee" - name of the recipient of funds
* "Amount" - an amount of US dollars that the transaction represents. Payments are represented as negative values and are presented in parenthesis and with customary use of US number separation. For example, a payment of $1234.56 would appear as "($1,234.56)".<|im_end|>
<|im_start|>assistant
Understood! Here's an version of the code to match your schema:

python

import csv

# Read the input CSV file
with open("input.csv", "r") as input_file:
    reader = csv.reader(input_file)
    header = next(reader) # skip the header row
    payments = {}
    for row in reader:
        payee = row[2] # assume the payee is in the third column
        amount = float(row[3].strip("($,)").replace(",", "")) # assume the amount is in the fourth column
        if payee in payments:
            payments[payee] += amount
        else:
            payments[payee] = amount

# Write the output CSV file
with open("output.csv", "w", newline="") as output_file:
    writer = csv.writer(output_file)
    writer.writerow(["Payee", "Amount"]) # write the header row
    for payee, amount in payments.items():
        writer.writerow([payee, amount])

This code takes into account the format of the "Amount" column in your input CSV file, and processes it accordingly.<|im_end|>