import gerber
from gerber.render import GerberCairoContext

# Read gerber and Excellon files
top_copper = gerber.read('example.GTL')
nc_drill = gerber.read('example.txt')

# Rendering context
ctx = GerberCairoContext()

# Create SVG image
top_copper.render(ctx)
nc_drill.render(ctx, 'composite.svg')

$ git clone https://github.com/curtacircuitos/pcb-tools.git
$ cd pcb-tools
$ python setup.py install