CAD 文件 批量转为PDF或批量打印，还是比较稳定的

1.需要本地安装CAD软件

2.通过 Everything 搜索工具搜索，DWG To PDF.pc3 ，获取到文件目录 ，替换到代码中，

    originalValue = ACADPref.PrinterConfigPath \
        = r"C:\Users\hyh\AppData\Roaming\Autodesk\AutoCAD 2024\R24.3\chs\Plotters"

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import win32com.client
import time
import os,subprocess




def find_all_sub_files( directory, suffix='.dxf'):
    '''

    :param directory:  查找的主目录
    :param suffix: 获取的扩展名
    :return:  符合扩展名的列表
    '''
    all_files = []

    # 递归遍历目录及其子目录中的所有文件
    for root, dirs, files in os.walk(directory):
        for file in files:
            if file.endswith(suffix):
                if '~$' not in file:
                    all_files.append(os.path.join(root, file))

    return all_files

def close_application(application = "chrome.exe"):
    # windows系统 关闭谷歌浏览器
    cmd = "taskkill /f /t /im {}".format(application)
    # 执行cmd命令，不显示任何输出
    subprocess.run(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)



def cad_to_PDf(pdf_path,doc):


    # doc = wincad.ActiveDocument
    doc.Utility.Prompt("Hello! Autocad from pywin32com.\n")
    msp = doc.ModelSpace

    #print(doc.Name)
    #print(doc.ActiveLayout.ConfigName)

    # 设置绘图仪管理器的工作目录
    ACADPref = doc.Application.preferences.Files

    originalValue = ACADPref.PrinterConfigPath \
        = r"C:\Users\hyh\AppData\Roaming\Autodesk\AutoCAD 2024\R24.3\chs\Plotters"

    #print(ACADPref)
    #print(originalValue)

    oplot = doc.PlotConfigurations.Add("PDF", doc.ActiveLayout.ModelType)

    doc.ActiveLayout.ConfigName = "DWG To PDF.pc3"
    doc.SetVariable("Filedia", 0)

    doc.SetVariable("BACKGROUNDPLOT", 0) # 前台打印
    doc.Plot.QuietErrorMode = True

    print(pdf_path)
    doc.Plot.PlotToFile(pdf_path) # 选择打印机，若要采用纸质打印的打印机，则输出就需要将plot.PlotToFile()改为plot.PlotToDevice()


    # doc.PlotRotation = 0  # 横向打印
    # doc.StandardScale = 0  # 图纸打印比例
    # doc.CenterPlot = True  # 居中打印
    # doc.PlotWithPlotStyles = True  # 依照样式打印
    # doc.PlotHidden = False  # 隐藏图纸空间对象


    oplot.Delete()
    oplot = None
    obj = doc.GetVariable("DBMOD")
    # print(obj)


def cad_conversion(cad_file_dir, save_pdf_path):

    wincad = win32com.client.Dispatch("AutoCAD.Application")
    docs = wincad.Documents


    dxf_all_list=find_all_sub_files(cad_file_dir, suffix='.dxf')

    for dxf_path in dxf_all_list:

        cad_name=dxf_path.split('\\')[-1].replace('.dxf','.pdf')

        if not os.path.exists(save_pdf_path):
            os.makedirs(save_pdf_path)

        pdf_path=os.path.join(save_pdf_path,cad_name)

        doc = docs.Open(dxf_path)

        cad_to_PDf( pdf_path, doc)

        # 关闭CAD文件
        #doc.Close()
        doc.Close(False)
        del doc
        time.sleep(1)

        close_application(application="chrome.exe") # 关闭谷歌浏览器，如默认其他浏览器，需要修改 chrome.exe




    wincad.Quit()
    del wincad



if __name__ == '__main__':

    # CAD文件路径 输出PDF文件路径
    cad_file = r"D:\Python\CAD\hb"  # 输入CAD文件路径
    output_pdf = r"D:\Python\CAD\hb\export_cad_data\CAD"  # 输出PDF文件路径
    cad_conversion(cad_file, output_pdf)