How to suppress warning output ?

Comments

• Matthias

  August 2022

  No, sorry. Currently these warnings are unconditionally sent to stdout for the Python module. The only way to suppress them is to redirect stdout (temporarily) somewhere else.

  But I'd say these warnings are an indication that DXF is not fully implemented. Please take this message seriously. DXF is not well defined and KLayout's module implements a subset only and even for that I'm not sure about the quality. Unless you know what you're doing, I do not advise to use it.

  Matthias
• yangwoo

  August 2022

  Thanks for detailed reply. I tried to redirect stdout without success. Using contextlib, I can only suppress print("readFile"). Viewport-related warning messages are NOT suppressed. Strange...

  import pya
  from contextlib import contextmanager
  import sys, os
  
  @contextmanager
  def suppress_stdout():
      with open(os.devnull, "w") as devnull:
          old_stdout = sys.stdout
          sys.stdout = devnull
          try:  
              yield
          finally:
              sys.stdout = old_stdout
  
  def readFile():
      print("readFile")
      layout = pya.Layout()
      load_options = pya.LoadLayoutOptions()
      load_options.dxf_polyline_mode=3
      load_options.dxf_text_scaling=100
      load_options.dxf_circle_points=64
      load_options.dxf_dbu=0.01
      load_options.dxf_unit=1
      layout.read("sample.dxf", load_options)
  
  with suppress_stdout():
      readFile()
  
• Matthias

  August 2022

  No, I'm sorry. The message is not printed by Python, hence you cannot redirect stdout this way.

  Currently there is no way to redirect or suppress log output from Python. You can only run the DXF reader is a separate process and redirect that process' stdout.

  I have created a ticket for this, but cannot promise a quick solution: https://github.com/KLayout/klayout/issues/1138

  Matthias
• yangwoo

  August 2022

  Ah.. I see. The new ticket creation is really appreciated.