You can download Python CAD script from here. http://freecode.com/projects/cad-scripts

Execution of Python scripts

1. Create a file in editor

2. Save the file with .py extension.

   Ex- Lr.py

3. Open the terminal.

4. Go the directory in which file is stored.

   Ex- $ cd Downloads/text_to_dxf-1.1/

5. Give the permissions to Lr.py file.

   $ chmod ugo+rwx Lr.py
   

6. Run the Lr.py file and create .txt file that holds coordinates (x,y) for .dxf file.

   $ ./Lr.py > Lr.txt

   You can give any name to file with .txt extension.

7. Now last step is to create .dxf file.

   $ python text_to_dxf.py Lr.txt Lr.dxf.

   Lr.dxf file is created in the directory in which you save the Lr.py file. You can open it.