from PyPDF2 import PdfReader

def extract_text_from_pdf(file_path):
    reader = PdfReader(file_path)
    text = ""
    for page in reader.pages:
        text += page.extract_text()
    return text

def clear_or_create_empty_file(file_path):
    open(file_path, 'w').close()

def write_string_to_file(file_path, string_to_write):
    with open(file_path, 'a') as file:
        file.write(string_to_write)