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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def open(url):
 """ Launches browser depending on os """

    if sys.platform == 'win32':
        os.startfile(url)
    elif sys.platform == 'darwin':
        subprocess.Popen(['open', url])
    else:
        try:
            subprocess.Popen(['xdg-open', url])
        except OSError:
            import webbrowser
            webbrowser.open(url)