dvc.org: get-started: dvc run: command not found on Windows

I have been working through the getting started portion of this project but have run into a snap at this part

I have setup the data and src tree as described:

.
├── data
│   ├── data.xml
│   └── data.xml.dvc
├── requirements.txt
└── src
    ├── evaluate.py
    ├── featurization.py
    ├── prepare.py
    └── train.py

but when I run:

dvc run -f prepare.dvc \
          -d src/prepare.py -d data/data.xml \
          -o data/prepared \
          python src/prepare.py data/data.xml

I get:

Running command:
        python ./src/prepare.py ./data/data.xml
The system cannot find the path specified.
ERROR: failed to run command - stage 'prepare.dvc' cmd python ./src/prepare.py ./data/data.xml failed

Having any troubles?. Hit us up at https://dvc.org/support, we are always happy to help!

But I am able to run the following successfully

python src/prepare.py data/data.xml

I am not sure what exactly is wrong here. Thanks for any help