gradio==3.28.0 gradio_client==0.1.4 mdtex2html pypinyin tiktoken socksio tqdm colorama duckduckgo_search==2.9.5 Pygments langchain==0.0.170 markdown PyPDF2 pdfplumber pandas commentjson openpyxl pandoc wolframalpha faiss-cpu google-search-results arxiv wikipedia google.generativeai openai unstructured google-api-python-client torch transformers