refactor: code

Author: ShubhamMandowara

poetry_basics_tut.md

@@ -0,0 +1,52 @@
+### What is poetry?
+
+Poetry is a tool for dependency management and packaging in Python. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you. 
+
+### Why we need poetry in modern development?
+
+To resolve the library versioning issues as there are new versions each day. And it create a virtual environment for you same as conda env
+
+
+### To install poetry:
+
+    `curl -sSL https://install.python-poetry.org | python3 -` 
+    
+on linux
+
+### To create new project with poetry:
+
+    `poetry new project_name`
+
+### This will create a directory with project name with 
+- pyproject.toml 
+- ReadMe.md
+- project_name
+    - __init__.py
+- tests
+    - __init__.py
+- poetry.lock
+
+This will create a directory structure
+
+### To initialize poetry in pre existing repository then go to repository and open terminal and type `poetry init` command to initialize the poetry
+
+
+To add dependencies open terminal :
+
+- Add libery dependencies to poetry
+    `poetry add library_name`
+- To Remove `poetry remove library_name`
+- If there is already a pyproject and poetry.lock file then you can simply type `poetry install`
+- To activate poetry env 
+ `poetry shell`
+- To add a libray manually in pyproject add 
+library_name = version
+- We can create different envrionment for development, deployment and for testing
+- Can create groups and dependencies to it `poetry add pytest --group test` this is to add dependencies to group test and you can use without `poetry install --without test,docs` to add dependencies to all except the given groups
+- Whenever you add a dependency its good to lock them using `poetry lock` 
+
+
+References:
+- Install: https://python-poetry.org/docs/
+- Basic usage link: https://python-poetry.org/docs/basic-usage/
+