If I have an account on OpenAI and I want to build my own GPT program that uses the API Key of my account so that it can access a set of my PDF files on My Google Drive where I can request to summarize a specific file or create a specific text from a set of PDF files, can you write this code to run on Google Colab using the following libraries:
gpt_index, langchain, llama-index, openai, PyPDF2