How to use 'urllib urlretrieve python3' in Python

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def download_urllib(url, filename):
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    """ Try to donwload via urllib."""
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    print("Trying to Download via urllib from:\n  ", url)
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    keep_going = True
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    try:
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        url_res = urllib2.urlopen(url)
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    except (HTTPError, URLError, ssl.CertificateError) as err:
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        print("Error: %s" % err)
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        return False
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    with open(filename, 'wb') as outfile:
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        block_sz = 8192
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        meta = url_res.info()
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        meta_func = meta.getheaders if hasattr(meta, 'getheaders') else meta.get_all
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        meta_length = meta_func("Content-Length")
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        file_size = None
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        if meta_length:
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            file_size = int(meta_length[0])
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        message = "Downloading: {0}\nBytes: {1}\n".format(url, file_size)
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        dstyle = wx.PD_APP_MODAL | wx.PD_CAN_ABORT | wx.PD_AUTO_HIDE
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        if file_size:
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            progress = wx.ProgressDialog('Downloading', message,
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                                         maximum=1+file_size/block_sz, style=dstyle)
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        else:
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            progress = wx.ProgressDialog('Downloading', message, style=dstyle)
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        file_size_dl = 0
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        while keep_going:
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            read_buffer = url_res.read(block_sz)
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            if not read_buffer:
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                progress.Update(file_size_dl / block_sz, "message+\nDONE!")
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                wx.Sleep(0.2)
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                break
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            file_size_dl += len(read_buffer)
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            outfile.write(read_buffer)
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            status = "{0:16}".format(file_size_dl)
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            if file_size:
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                status += "   [{0:6.2f}%]".format(file_size_dl * 100 / file_size)
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            (keep_going, dummy_skip) = progress.Update(file_size_dl / block_sz,
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                                                       message+status)
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            wx.Sleep(0.08)  # Give the GUI some update time
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        progress.Destroy()

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def _download(self, url):
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    return urlopen(url)