docs(python-wasm): webassembly instructions for python

Signed-off-by: Mayank Kumar <mayank22oct@gmail.com>

Author: mayankkumar2

docs/WebAssembly/Python.md

@@ -0,0 +1,74 @@
+# WebAssembly with Python
+
+## Environment Setup
+
+### Docker
+Install docker using the instructions [here](https://docs.docker.com/engine/install/)
+### CPython's WASM build
+#### Steps to build a CPython WebAssembly Build
+
+- Clone the repo https://github.com/singlestore-labs/python-wasi/
+```bash
+git clone https://github.com/singlestore-labs/python-wasi/
+```
+- Change directory to ```python-wasi``` using the command: ```cd python-wasi```
+- Build the docker image using the command: ```docker build -f docker/Dockerfile -t wasi-build:latest docker```
+- Now start the docker container and mount the current directory was working directory inside docker container:
+```bash
+docker run -it --rm -v $(pwd):$(pwd) -w $(pwd) wasi-build:latest bash
+```
+- To download the CPython source, dependencies and to build the CPython's WASM build, run the command:
+```bash
+./run.sh
+```
+- The build output is saved at ```opt/wasi-python/```.
+### Wasmtime
+Install wasmtime using the instructions at [wasmtime.dev](https://wasmtime.dev/)
+
+## Python Program to Print the Fibonacci sequence
+
+```python3
+nterms = 10
+n1, n2 = 0, 1
+count = 0
+if nterms == 1:
+   print("Fibonacci sequence upto",nterms,":")
+   print(n1)
+else:
+   print("Fibonacci sequence:")
+   while count < nterms:
+       print(n1)
+       nth = n1 + n2
+       # update values
+       n1 = n2
+       n2 = nth
+       count += 1
+```
+
+## Running the python code on wasmtime
+- Change directory to the **root python-wasi source directory**.
+- Save the fibonacci code source at ```$HOME/fib.py```
+- Run the python fibonacci code in wasmtime using the command
+```bash
+wasmtime run --mapdir=$(pwd)/opt::opt \
+             -- opt/wasi-python/bin/python3.wasm -c "$(cat $HOME/fib.py)"
+```
+output:
+```bash
+Fibonacci sequence:
+0
+1
+1
+2
+3
+5
+8
+13
+21
+34
+```
+
+## References
+- https://www.programiz.com/python-programming/examples/fibonacci-sequence
+- https://github.com/singlestore-labs/python-wasi/blob/main/README.md
+