all Python 3webbrowserexception

webbrowser.Error

browser controllers

The webbrowser exception raised when no runnable browser is found or a controller fails to perform an action.

Syntax

except webbrowser.Error:

It is mostly raised by webbrowser.get() when the requested browser is not available. webbrowser.open() on a machine with no browser usually raises nothing and returns False instead, so check the result rather than only catching the exception. Servers and CI usually have no browser at all. It derives from Exception, not OSError.

Examples

import webbrowser
try:
    webbrowser.get('no-such-browser')
except webbrowser.Error as err:
    print(err)  # → could not locate runnable browser
print(issubclass(webbrowser.Error, OSError))  # → False

See also

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