how to get list of browser installed in a system using python?

问题

I would like to write a script (in python) which scans the machine.(assumption is system has Linux) and retrieve the list of browser's installed. Looking for suggestions to implement it. I am using selenium to open links
browser = webdriver.Firefox()
Here we have to mention Firefox to open link in Firefox browser. What if user don't have Firefox in machine (chrome installed)? I had already searched but haven't got any result.

P.S: If system has windows/Mac OS

回答1:

A better approach: use try/except block

try:
    browser = webdriver.Firefox() 
    browser.get('url')

except (IOException, Exception):
    pass

It will help in cases where driver is not able to find the browser or there is some problem while launching.

回答2:

You can scan all .desktop files in /usr/share/applications looking for WebBrowser in Categories field.

来源：https://stackoverflow.com/questions/45885023/how-to-get-list-of-browser-installed-in-a-system-using-python