csv_template.py

import csv
import pandas as pd
import re
import sys
from tkinter import Tk, filedialog, Button, Label, Entry, messagebox
import os

# Constants
APP_TITLE = "Title"
DEFAULT_OUTPUT_FILE = 'output.csv'

class CSVProcessor:
    def __init__(self, input_file, output_file):
        self.input_file = input_file
        self.output_file = output_file

    def read_csv(self):
        with open(self.input_file, mode='r', newline='') as file:
            reader = csv.reader(file)
            data = [row for row in reader]
        return data

    def write_csv(self, data):
        with open(self.output_file, mode='w', newline='') as file:
            writer = csv.writer(file)
            writer.writerows(data)

    def modify_data(self, data):
        # Find the indices of the relevant columns
        header = data[0]

        # Filter the data based on the new criteria
        # Collect some stats
        
        modified_data = filtered_data
        return modified_data

    def process(self):
        try:
            # Read the CSV file
            data = self.read_csv()
            
            # Modify the data
            modified_data = self.modify_data(data)
            
            # Write the modified data to a new CSV file
            self.write_csv(modified_data)
            return True
        except Exception as e:
            messagebox.showerror("Error", f"An error occurred during conversion: {e}")
            return False

def select_input_file():
    global input_file
    input_file = filedialog.askopenfilename(title="Select input CSV file", filetypes=[("CSV files", "*.csv")])
    if input_file:
        input_label.config(text=f"Input File: {input_file}")

def run_conversion():
    global output_file
    if not input_file:
        messagebox.showerror("Error", "Please select an input file.")
        return
    output_file = os.path.join(os.path.dirname(__file__), output_entry.get())
    if not output_file:
        messagebox.showerror("Error", "Please specify an output file.")
        return
    processor = CSVProcessor(input_file, output_file)
    if processor.process():
        messagebox.showinfo("Done", "Conversion completed successfully!")
        os.startfile(os.path.dirname(output_file))

if __name__ == "__main__":
    input_file = None

    root = Tk()
    root.title(APP_TITLE)

    input_button = Button(root, text="Select Input File", command=select_input_file)
    input_button.pack(pady=10)

    input_label = Label(root, text="Input File: None")
    input_label.pack(pady=5)

    output_label = Label(root, text="Output File:")
    output_label.pack(pady=5)

    output_entry = Entry(root, width=50)
    output_entry.insert(0, DEFAULT_OUTPUT_FILE)
    output_entry.pack(pady=5)

    convert_button = Button(root, text="Run Conversion", command=run_conversion)
    convert_button.pack(pady=20)

    root.mainloop()