with open('France_Data.json', 'w') as fp:
    json.dump({'data': [{'tag': 'capital', 'value': 'Paris'}, {'tag':
        'population', 'value': 34111000000}, {'tag': 'language', 'value':
        'French'}], 'result_count': 33, 'page_size': 5000, 'current_page': 
        1, 'total_pages': 1, 'api_call_credits': 1}, fp)
How do I rename columns in a python pandas dataframe?