def csv_from_gdrive(url):
    
    """Take the URL of a CSV file in Google Drive and return a new URL that allows the file to be downloaded using `pd.read_csv()`.
    
    url: str, the URL of a CSV file in Google Drive.
    
    Returns: str, a URL"""
    
    file_id = url.split('/')[-2]
    download_url = 'https://drive.google.com/uc?id=' + file_id
    
    return download_url