A Python package to create and modify DXF drawings, independent from the DXF version. You can open/save every DXF file without loosing any content (except comments), Unknown tags in the DXF file will be ignored but preserved for saving. With this behavior it is possible to open also DXF drawings that contains data from 3rd party applications.
- ezdxf is a Python package to read and write DXF drawings
- intended audience: Developer
- requires Python 2.7 or later, runs on CPython and pypy, maybe on IronPython and Jython
- OS independent
- additional required packages: pyparsing
- MIT-License
- supported DXF versions read/new: R12, R2000, R2004, R2007, R2010, R2013 and R2018
- support for DXF versions R13/R14 (AC1012/AC1014), will be upgraded to R2000 (AC1015)
- support for older versions than R12, will be upgraded to R12 (AC1009)
- preserves third-party DXF content
- additional fast and simple DXF R12 file/stream writer, just the ENTITIES section with support for LINE, CIRCLE, ARC, TEXT, POINT, SOLID, 3DFACE and POLYLINE.
a simple example:
import ezdxf
drawing = ezdxf.new(dxfversion='AC1024') # or use the AutoCAD release name ezdxf.new(dxfversion='R2010')
modelspace = drawing.modelspace()
modelspace.add_line((0, 0), (10, 0), dxfattribs={'color': 7})
drawing.layers.new('TEXTLAYER', dxfattribs={'color': 2})
# use set_pos() for proper TEXT alignment - the relations between halign, valign, insert and align_point are tricky.
modelspace.add_text('Test', dxfattribs={'layer': 'TEXTLAYER'}).set_pos((0, 0.2), align='CENTER')
drawing.saveas('test.dxf')
example for the r12writer, writes a simple DXF R12 file without in-memory structures:
from random import random
from ezdxf.r12writer import r12writer
MAX_X_COORD = 1000.0
MAX_Y_COORD = 1000.0
CIRCLE_COUNT = 100000
with r12writer("many_circles.dxf") as dxf:
for i in range(CIRCLE_COUNT):
dxf.add_circle((MAX_X_COORD*random(), MAX_Y_COORD*random()), radius=2)
The r12writer supports only the ENTITIES section of a DXF R12 drawing, no HEADER, TABLES or BLOCKS section is present, except FIXED-TABLES are written, than some additional predefined text styles and line types are available.
Install with pip:
pip install ezdxf
or from source:
python setup.py install
The source code of ezdxf can be found on GitHub.com at:
http://github.com/mozman/ezdxf.git
Issue Tracker at:
http://github.com/mozman/ezdxf/issues
Feedback, Q&A, Discussions at Google Groups:
https://groups.google.com/d/forum/python-ezdxf
Mailing List:
Feedback is greatly appreciated.
Manfred