这个是ezdxf出品的，可以使用命令行的方式进行转换

ezdxf draw -o file.<png|svg|pdf> <file.dxf>

也可以自己改动代码
examples/addons/drawing/pdf_export.py
但是直接运行会有误，以下是我改动后的代码：

from ezdxf.addons import odafc
import ezdxf
import os
import json
import re
import pathlib
import time
from ezdxf.addons.drawing import Frontend, RenderContext
from ezdxf.addons.drawing import pymupdf, layoutdef transparency(filepath):doc = ezdxf.readfile(filepath)msp = doc.modelspace()backend = pymupdf.PyMuPdfBackend()Frontend(RenderContext(doc), backend).draw_layout(msp)pdf_bytes = backend.get_pdf_bytes(layout.Page(0, 0, layout.Units.mm), settings=layout.Settings(scale=10))pdf_file = os.path.join(os.path.dirname(filepath), os.path.basename(filepath).split(".")[0] + "_dwg.pdf")(pathlib.Path(pdf_file)).write_bytes(pdf_bytes)
def export(filepath: pathlib.Path, layout_names=("Model",), scale=1):print(f"\nprocessing: {filepath.name}")t0 = time.perf_counter()doc = ezdxf.readfile(filepath)t1 = time.perf_counter()print(f"loading time: {t1 - t0: .3f} seconds")for layout_name in layout_names:outname = filepath.stem + f"-[{layout_name}]" + ".pdf"CWD = os.path.dirname(filepath)outname = pathlib.Path(CWD+"/"+outname)print(outname)t1 = time.perf_counter()if layout_name == "Model":dxf_layout = doc.modelspace()page = layout.Page(0,  # auto-detect0,  # auto-detectlayout.Units.mm,  # 1 drawing unit = 1mmlayout.Margins.all(0),max_width=1189,  # limit page width to 1189mmmax_height=841,  # limit page height to 841mm)settings = layout.Settings(scale=scale)else:try:dxf_layout = doc.paperspace(layout_name)except KeyError:print(f"Layout '{layout_name}' not found")continuepage = layout.Page.from_dxf_layout(dxf_layout)settings = layout.Settings(fit_page=False,scale=dxf_layout.get_plot_unit_scale_factor() * scale,)backend = pymupdf.PyMuPdfBackend()# You can get the content bounding box in DXF drawing units, before you create the# PDF output to calculate page size, margins, scaling factor and so on ...# content_extents = backend.bbox()Frontend(RenderContext(doc), backend).draw_layout(dxf_layout)pdf_bytes = backend.get_pdf_bytes(page, settings=settings)t2 = time.perf_counter()print(f"render time: {t2 - t1: .3f} seconds")(outname).write_bytes(pdf_bytes)class dwg_analysis:def __init__(self, filepath, format):self.filepath = filepathself.format = formatdef dwg2data(self):dxf_file = os.path.join(os.path.dirname(self.filepath), os.path.basename(self.filepath).split(".")[0] + ".dxf")odafc.convert(self.filepath, dxf_file, version='R2000', replace=True)  doc = ezdxf.readfile(dxf_file)msp = doc.modelspace()pdf_file = export(pathlib.Path(dxf_file),["Model", "PLAN", "SECTION"],)# pdf_file = transparency(dxf_file)data = {}# 获取TEXT实体texts = msp.query('TEXT')text_data = []if self.format == "dwg_text":for text in texts:decoded_str = re.sub(r'\\U\+([0-9A-Fa-f]{4})', lambda m: chr(int(m.group(1), 16)), text.dxf.text)text_data.append(decoded_str)filtered_list = [item for item in text_data if not (isinstance(item, (int, float)) or (isinstance(item, str) and str.isdigit(item)) or (isinstance(item, str) and item.isdigit()))]data['document'] = self.remove_duplicates(filtered_list)data['metadata'] =  pdf_filedata['format'] =  formatreturn datafor text in texts:decoded_str = re.sub(r'\\U\+([0-9A-Fa-f]{4})', lambda m: chr(int(m.group(1), 16)), text.dxf.text)text_info = {'text': decoded_str,'insert': (text.dxf.insert[0], text.dxf.insert[1]),'height': text.dxf.height,'rotation': text.dxf.rotation,'style': text.dxf.style,'layer': text.dxf.layer}text_data.append(text_info)data['TEXT'] = text_data# 获取LINE实体lines = msp.query('LINE')line_data = []for line in lines:line_data.append({'start': (line.dxf.start[0], line.dxf.start[1]),'end': (line.dxf.end[0], line.dxf.end[1])})data['LINE'] = line_data# 获取POLYLINE实体polylines = msp.query('POLYLINE')polyline_data = []for polyline in polylines:points = []for point in polyline.points():points.append((point[0], point[1]))polyline_data.append(points)data['POLYLINE'] = polyline_data# 获取CIRCLE实体circles = msp.query('CIRCLE')circle_data = []for circle in circles:circle_data.append({'center': (circle.dxf.center[0], circle.dxf.center[1]),'radius': circle.dxf.radius})data['CIRCLE'] = circle_data# 获取ARC实体arcs = msp.query('ARC')arc_data = []for arc in arcs:arc_data.append({'center': (arc.dxf.center[0], arc.dxf.center[1]),'radius': arc.dxf.radius,'start_angle': arc.dxf.start_angle,'end_angle': arc.dxf.end_angle})data['ARC'] = arc_data# 获取ELLIPSE实体ellipses = msp.query('ELLIPSE')ellipse_data = []for ellipse in ellipses:ellipse_data.append({'center': (ellipse.dxf.center[0], ellipse.dxf.center[1]),'major_axis': (ellipse.dxf.major_axis[0], ellipse.dxf.major_axis[1]),'ratio': ellipse.dxf.ratio,'start_param': ellipse.dxf.start_param,'end_param': ellipse.dxf.end_param})data['ELLIPSE'] = ellipse_datareturn datadef remove_duplicates(self,lst):res = []seen = {}for i in lst:if i not in seen:seen[i] = 1res.append(i)return res# 示例调用
if __name__ == "__main__":# DWG文件路径DWG_path = "/home/hyh/data/Maintenance_test_data/AIN.dwg"format = "dwg_text"dwf = dwg_analysis(DWG_path,format)dwf_txt = dwf.dwg2data()output_path = os.path.join(os.path.dirname(DWG_path), os.path.basename(DWG_path).split(".")[0] + "_" +format+ ".json")with open(output_path, 'w', encoding='utf-8') as f:json.dump(dwf_txt, f, ensure_ascii=False, indent=4)

一位国内大神出品的项目

🆒 cad2x @orcastor-previewer

预编译版本: 字体与图案 (3.53MB) | linux_arm64 (2.88MB) | linux_x64 (3.42MB) | win_x64 (3.61MB)

cad2x - 一个最小化的单文件命令行工具，用于将 CAD 文件（DXF / DWG）转换为其他格式（DXF / PDF / PNG / SVG），衍生自 LibreCAD (commit: 0601535)。

./upx -9 --ultra-brute cad2x