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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_pr(self, url):
 """ open url in the web browser """

        if self.dry_run:
            click.echo(f"  dry-run: Create new PR: {url}")
        else:
            click.echo("Backport PR URL:")
            click.echo(url)
            webbrowser.open_new_tab(url)