[Python] AutoCAD win32com PDF Export - Custom Scale Issue

I'm trying to convert a DWG file to a PDF using win32com.client in Python, while applying a custom scale of 0.2 . However, the resulting PDF does not have the expected scale.

Here is the code I'm using:

import win32com.client
import time
import os

def dwg_to_pdf_win32(dwg_file_path, pdf_file_path):
try:
# Initialize AutoCAD
autocad = win32com.client.Dispatch("AutoCAD.Application")
autocad.Visible = False

# Open the DWG file
doc = autocad.Documents.Open(dwg_file_path)
layout = doc.Layouts.Item("Model")

layout.PlotType = 2 # Extents
layout.CenterPlot = True
layout.PlotRotation = 1
layout.ConfigName = "Microsoft Print to PDF"

layout.CanonicalMediaName = "A3"
layout.UseStandardScale = False
layout.PaperUnits = 1
layout.SetCustomScale(1, 0.2) # Scale: 1/200

layout.PlotWithLineweights = False
layout.PlotWithPlotStyles = True
layout.StyleSheet = "style.ctb"

# Create the PDF
plot = doc.Plot
plot.PlotToFile(pdf_file_path)

# Wait for the PDF to be created
timeout = 120
for _ in range(timeout):
if os.path.exists(pdf_file_path):
print(f"PDF generated: {pdf_file_path}")
break
time.sleep(1)
else:
print("PDF file was not created.")
return None

# Close document
doc.Close(False)
print("Conversion successful!")

except Exception as e:
print(f"Error during conversion: {e}")

# Example usage
dwg_to_pdf_win32(
"C:\\Users\\hp\\P8818-PLAN.dwg",
"C:\\Users\\hp\\P8818-PLAN.pdf"
)


Any insights or corrections would be greatly appreciated. Thank you!

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