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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 download(self, url, file):
 """Download a file to filename or file object """

        if isinstance(file, str) or isinstance(file, unicode):
            file = open(file, 'wb')
        webclient = self.dupe()
        webclient.request('GET', url)
        rsp = webclient.getresponse()
        self._currdl = rsp
        self._dlfile = file
        for chunk in iter(lambda: rsp.read(16384), ''):
            file.write(chunk)
        self._currdl = None
        file.close()