diff --git a/docs/python/environment-and-dependency.md b/docs/python/environment-and-dependency.md
index 34311b5..d8964f0 100644
--- a/docs/python/environment-and-dependency.md
+++ b/docs/python/environment-and-dependency.md
@@ -15,7 +15,9 @@ sidebar_label: Environment Isolation and Dependency Management
     - [venv](https://docs.python.org/3/tutorial/venv.html). _Inbuilt_ `python -m venv`
 * Use `pip` for installing packages if not using `poetry`.
 
-
+:::info
+Docker based containerized python can be used as well. Official images [here](https://hub.docker.com/_/python). It is better to use virtualenvs in docker as well rather than root based user.
+:::
 
 ### Dependency Management:
 
diff --git a/docs/python/general.md b/docs/python/general.md
index 8212843..b84441a 100644
--- a/docs/python/general.md
+++ b/docs/python/general.md
@@ -11,7 +11,7 @@ It is recommended to upgrade the package dependency whenever possible although v
 :::
 
 * See [tools](tools.md) that can be used in development environment setup to ease your coding process.
-* Always use `python3` and try to stay above version `3.7`. **Latest stable** is always recommended.
+* Always use `python3`. **Latest stable** is always recommended. Ensure version is no older than 2 versions back. i.e. if current stable is `3.11` then use atleast `3.9`.
 * Indentation should always be **space** and width should always be **4**.
 * File size and functionality:
     - break files into modules if you feel they have multiple functionalities.
@@ -41,7 +41,7 @@ It is recommended to upgrade the package dependency whenever possible although v
             WHEN break DOESNOT HAPPEN
     ```
 * Use `pathlib` for path related use case rather than `os.path`
-* Use type annotation or type hints when possible for type safe code. `mypy` like checker can be used.
+* Use type annotation or type hints for type safe code especially for newer projects. Look into [tools](tools.md) for inference checker.
 * `Docker` can be used for deployment. Use `python` images for [`docker`](https://hub.docker.com/_/python).
 * Use `generators` and `yield` instead of data structures for high streams of data.
 * Use `itertools`, `functools` for utilities and `collections` for data structures when needed.
diff --git a/docs/python/tools.md b/docs/python/tools.md
index 32f9bcf..a7216b1 100644
--- a/docs/python/tools.md
+++ b/docs/python/tools.md
@@ -24,6 +24,7 @@ These can be used with dependency Management
 ### Linters:
 * [flake8](https://flake8.pycqa.org/en/latest/) with [plugins](https://github.com/DmytroLitvinov/awesome-flake8-extensions)
     * Alternative: [pylint](https://www.pylint.org)
+    * Alternative: [ruff](https://beta.ruff.rs/docs/)
 * [bandit](https://bandit.readthedocs.io/en/latest/) to find common security issues. This can be used with `flake8` as a [plugin](https://pypi.org/project/flake8-bandit/)
 
 ### Formatters:
@@ -32,6 +33,13 @@ These can be used with dependency Management
     - Alternative: [yapf](https://pypi.org/project/yapf/) 
 * [isort](https://timothycrosley.github.io/isort/) for sorting only imports in codes. This is OPTIONAL.
     - Alternative: [reorder-python-imports](https://github.com/asottile/reorder_python_imports) another way of sorting imports.
+
+
+### Type Inference
+* [mypy](http://mypy-lang.org/index.html) optional static type coding with python through annotations. from Dropbox but most famous in community.
+    - Alternative: [pyright](https://github.com/microsoft/pyright#readme) from Microsoft. Usually available in VSCode
+    - Alternative: [pyre](https://pyre-check.org/) from Facebook.
+    - Alternative: [pytype](https://google.github.io/pytype/) from Google.
     
 ### Testing:
 * [pytest](https://pytest.org) with [plugins](https://docs.pytest.org/en/7.0.x/reference/plugin_list.html)
@@ -45,7 +53,8 @@ These can be used with dependency Management
 * [factory_boy](https://factoryboy.readthedocs.io/en/stable/index.html) for fixture generation.
 * [coverage](https://coverage.readthedocs.io/en/coverage-5.1/) for checking code coverage of tests.
 * [interrogate](https://interrogate.readthedocs.io/en/latest/) for docstring coverage check.
-* [mypy](http://mypy-lang.org/index.html) optional static type coding with python through annotations.
+
+
 
 ### Readings and References:
 * [Design Patterns](https://python-patterns.guide/)