gradio==3.33.1 gradio_client==0.2.5 pypinyin tiktoken socksio tqdm colorama googlesearch-python Pygments langchain==0.0.173 markdown PyPDF2 pdfplumber pandas commentjson openpyxl pandoc wolframalpha faiss-cpu==1.7.4 duckduckgo-search arxiv wikipedia google.generativeai openai unstructured google-api-python-client tabulate