transfer python bindings code

gpt4all-bindings/python/docs/css/custom.css

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+/* Remove the `In` and `Out` block in rendered Jupyter notebooks */
+.md-container .jp-Cell-outputWrapper .jp-OutputPrompt.jp-OutputArea-prompt,
+.md-container .jp-Cell-inputWrapper .jp-InputPrompt.jp-InputArea-prompt {
+  display: none !important;
+}

gpt4all-bindings/python/docs/gpt4all_api.md

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+# GPT4All API
+The `GPT4All` provides a universal API to call all GPT4All models and 
+introduces additional helpful functionality such as downloading models.
+
+::: gpt4all.gpt4all.GPT4All
+

gpt4all-bindings/python/docs/index.md

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+# GPT4All
+
+In this package, we introduce Python bindings built around GPT4All's C/C++ ecosystem.
+
+## Quickstart
+
+```bash
+pip install gpt4all
+```
+
+In Python, run the following commands to retrieve a GPT4All model and generate a response
+to a prompt.
+
+**Download Note*:*
+By default, models are stored in `~/.cache/gpt4all/` (you can change this with `model_path`). If the file already exists, model download will be skipped.
+
+```python
+import gpt4all
+gptj = gpt4all.GPT4All("ggml-gpt4all-j-v1.3-groovy")
+messages = [{"role": "user", "content": "Name 3 colors"}]
+gptj.chat_completion(messages)
+```