data_sources/upload_file.py

import pandas as pd
import sqlite3

def process_data_upload(data_file):

    df = pd.read_csv(data_file, sep=";")

    # Read each sheet and store data in a DataFrame
    #data = df.parse(sheet_name)
    # Process the data as needed
    # ...
    df.columns = df.columns.str.replace(' ', '_')
    df.columns = df.columns.str.replace('/', '_')
    
    connection = sqlite3.connect('data_source.db')
    print("Opened database successfully");
    print(df.columns)

    df.to_sql('data_source', connection, if_exists='replace', index = False)
    
    connection.commit()
    connection.close()