Python XVFB error in windows

python python-2.7 xvfb pyvirtualdisplay
Gaurav Jain picture Gaurav Jain · Jan 11, 2014 · Viewed 7.9k times · Source

For virtual Framebuffer (headless testing) I'm using Xvfb with PyVirtualDisplay and it's working fine in Ubuntu but showing error in Windows7. here is part of code where problem is occurring.

from pyvirtualdisplay import Display
display = Display(visible=1, size=(300, 400))
display.start()

but when I run same command in Windows, I get this error 

Traceback (most recent call last):
  File "C:\Python27\Scripts\pynt-script.py", line 9, in <module>
    load_entry_point('pynt==0.8.0', 'console_scripts', 'pynt')()
  File "C:\Python27\lib\site-packages\pynt\_pynt.py", line 295, in main
    build(sys.argv[1:])
  File "C:\Python27\lib\site-packages\pynt\_pynt.py", line 48, in build
    module = imp.load_source(path.splitext(path.basename(args.file))[0], args.fi
le)
  File "build.py", line 7, in <module>
    display = Display(visible=1, size=(300,400))
  File "C:\Python27\lib\site-packages\pyvirtualdisplay\display.py", line 33, in
__init__
    self._obj = self.display_class(
  File "C:\Python27\lib\site-packages\pyvirtualdisplay\display.py", line 50, in
display_class
    cls.check_installed()
  File "C:\Python27\lib\site-packages\pyvirtualdisplay\xvfb.py", line 34, in che
ck_installed
    ubuntu_package=PACKAGE).check_installed()
  File "C:\Python27\lib\site-packages\easyprocess\__init__.py", line 209, in che
ck_installed
    raise EasyProcessCheckInstalledError(self)
easyprocess.EasyProcessCheckInstalledError: cmd=['Xvfb', '-help']
OSError=[Error 2] The system cannot find the file specified
Program install error!

I think my program is not able to find xvfb program/library ? I installed xvfbwrapper (https://github.com/cgoldberg/xvfbwrapper) but problem still remain same. again I think xvfbwrapper is different from xvfb?

Any alternative for Windows platform which can do headless testing (virtual framebuffer)

Answer

P̲̳x͓L̳ picture P̲̳x͓L̳ · Jan 11, 2014

You get an error because command Xvfb was not found. Xvfb is X virtual framebuffer which is not a part of Microsoft Windows 7.

Related questions

Xvfb on Windows

I'm using pyvirtualdisplay to run a test with a headless Firefox browser. This is the code I'm using : from selenium import webdriver from selenium.webdriver.support.ui import WebDriverWait from pyvirtualdisplay import Display display= Display(visible=0, size=(320, 240)).start() # visible=0 display.…

Read More
Iterating over dictionaries using 'for' loops

I am a bit puzzled by the following code: d = {'x': 1, 'y': 2, 'z': 3} for key in d: print key, 'corresponds to', d[key] What I don't understand is the key portion. How does Python recognize that it needs only to …

Read More
What is the result of % in Python?

What does the % in a calculation? I can't seem to work out what it does. Does it work out a percent of the calculation for example: 4 % 2 is apparently equal to 0. How?

Read More