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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 browse_website(self, browser=None):
 """ Launch web browser at project's homepage @param browser: name of web browser to use @type browser: string @returns: 0 if homepage found, 1 if no homepage found """

        if len(self.all_versions):
            metadata = self.pypi.release_data(self.project_name, \
                    self.all_versions[0])
            self.logger.debug("DEBUG: browser: %s" % browser)
            if metadata.has_key("home_page"):
                self.logger.info("Launching browser: %s" \
                        % metadata["home_page"])
                if browser == 'konqueror':
                    browser = webbrowser.Konqueror()
                else:
                    browser = webbrowser.get()
                    browser.open(metadata["home_page"], 2)
                return 0

        self.logger.error("No homepage URL found.")
        return 1