Export Blocks to DWG with Python for AutoCAD

 

Here’s a sample of exporting blocks to files using PyRx.  The main idea here is to filter the blocks we want to export, then use Database::wblock to create a new database, we can then save as the file format we want

 

# import

import PyRx as Rx

import PyGe as Ge

import PyGi as Gi

import PyDb as Db

import PyAp as Ap

import PyEd as Ed

import traceback

# define command blkstoDWG

def PyRxCmd_blkstoDWG():

    try:

        db = Db.curDb()

        exportBlock(db,'E:\\temp\\','dwg' )

    except Exception as err:

        traceback.print_exception(err)

           

# define command blkstoDXF

def PyRxCmd_blkstoDXF():

    try:

        db = Db.curDb()

        exportBlock(db,'E:\\temp\\','dxf' )

    except Exception as err:

        traceback.print_exception(err)

       

# use wblock to create a new database from the block id

def exportBlock(db, path, ext)->bool:

    bt = Db.BlockTable(db.blockTableId())

    for name, id in bt.toDict().items():

        if not checkBlock(name, id):

            continue

        outDb = db.wblock(id)

        if ext.casefold() == "dxf".casefold():

            outDb.dxfOut("{}{}.{}".format(path,name,ext))

        if ext.casefold() == "dwg".casefold():

            outDb.saveAs("{}{}.{}".format(path,name,ext))

# filter out the blocks we don't want

def checkBlock(name, id)->bool:

    btr = Db.BlockTableRecord(id)

    if btr.isLayout():

        return False

    if btr.isAnonymous():

         return False

    if btr.isFromExternalReference():

        return False

    if btr.isFromOverlayReference():

        return False

    if(name.startswith("A$")):

        return False

    return True