Python Forum

This is the confusing thing about some python packages...

The wealth of packages to assist you in reaching your goals are amazing but now and then you run into something that appears as a brick wall for something that appears to be your final link between you and success. Such is the case with webkit2png. Running the setup (python setup.py install) and not a single error in the process but there is a warning which doesn't seem to be a problem.

This package installs a command line tool to snap-shot an html page and send it to a png file.

Here is what the output of the install is...

Output:
running egg_info
writing webkit2png.egg-info\PKG-INFO
writing dependency_links to webkit2png.egg-info\dependency_links.txt
writing top-level names to webkit2png.egg-info\top_level.txt
reading manifest file 'webkit2png.egg-info\SOURCES.txt'
writing manifest file 'webkit2png.egg-info\SOURCES.txt'
installing library code to build\bdist.win32\egg
running install_lib
warning: install_lib: 'build\lib' does not exist -- no Python modules to install
creating build\bdist.win32\egg
creating build\bdist.win32\egg\EGG-INFO
copying webkit2png.egg-info\PKG-INFO -> build\bdist.win32\egg\EGG-INFO
copying webkit2png.egg-info\SOURCES.txt -> build\bdist.win32\egg\EGG-INFO
copying webkit2png.egg-info\dependency_links.txt -> build\bdist.win32\egg\EGG-INFO
copying webkit2png.egg-info\top_level.txt -> build\bdist.win32\egg\EGG-INFO
zip_safe flag not set; analyzing archive contents...
creating 'dist\webkit2png-0.8.2-py3.6.egg' and adding 'build\bdist.win32\egg' to it
removing 'build\bdist.win32\egg' (and everything under it)
Processing webkit2png-0.8.2-py3.6.egg
Removing c:\python\lib\site-packages\webkit2png-0.8.2-py3.6.egg
Copying webkit2png-0.8.2-py3.6.egg to c:\python\lib\site-packages
webkit2png 0.8.2 is already the active version in easy-install.pth

Installed c:\python\lib\site-packages\webkit2png-0.8.2-py3.6.egg
Processing dependencies for webkit2png==0.8.2
Finished processing dependencies for webkit2png==0.8.2

The only red flag I can see is the line "warning: install_lib: 'build\lib' does not exist -- no Python modules to install".

I have no idea how I'm supposed to resolve this warning. It doesn't appear to be a missing module. I went to the GITHUB page for it and see where the last bit of guidance given is to check out the help for the command line interface with "webkit2png -h" from the scripts folder, which resulted in Windows telling me that there was no webkit2png executable.

So apparently, the installer didn't complete successfully and I'm guessing that the cause of that is the warning message.

Anyone know how I can resolve this and complete a successful install of this package?

I expect that you may have already seen the homepage, but there are quite a few install options listed, so here's the URL in case you
haven't been here yet: https://github.com/AdamN/python-webkit2png.

The last update to this package was 5 years ago, which would concern me.

It's old and not made to work in Windows.
Look as setup.py classifiers.

KipCarter Wrote:Running the setup (python setup.py install)

This is the old way rarely used anymore,now we use pip

pip install <package name>

It should be no problem to find a update version that's Cross-platform eg pyscreenshot,
or write one using Selenium which has browser.save_screenshot builtin,can also take screenshot of html element.
Quick test.

from selenium import webdriver
from selenium.webdriver.chrome.options import Options

#--| Setup
options = Options()
options.add_argument("--headless")
options.add_argument("window-size=1024,960")
browser = webdriver.Chrome(executable_path=r'C:\cmder\bin\chromedriver.exe', options=options)
#--| Parse or automation
browser.get('https://python-forum.io/Thread-Anyone-experienced-with-webkit2png')
browser.save_screenshot("screenshot.png")
browser.close()

Before you waste a bunch of time reading this post... Just go to the next one!

(Mar-20-2020, 09:10 PM)snippsat Wrote: [ -> ]It should be no problem to find a update version that's Cross-platform eg pyscreenshot,
or write one using Selenium which has browser.save_screenshot builtin,can also take screenshot of html element.
Quick test.

Perfect! This is the kinda thing that I lack as a Python Greenie! Thanks snippsat.

I ran the test and it produced a full page PNG file based off of my html code. I then updated ...

options.add_argument("window-size=1024,960")

to...

options.add_argument("window-size=103,300")

so that I could focus in on just the label rendering itself and ran the code again. Was expecting that if I reduced the value of "window-size" that the image capture would reduce in size from the lower right to the upper left. However, it produced virtually a PNG file of exactly the same dimensions as the first test.

All I need to capture to the PNG is this...


Going off to research acceptable option values for Selenium.