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categories = ['general'] # optionaldef request(query, params):    '''pre-request callback    params<dict>:      method  : POST/GET      headers : {}      data    : {} # if method == POST      url     : ''      category: 'search category'      pageno  : 1 # number of the requested page    '''    params['url'] = 'https://host/%s' % query    return paramsdef response(resp):    '''post-response callback    resp: requests response object    '''    return [{'url': '', 'title': '', 'content': ''}]
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