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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 push_json_file(json_file, url, dry_run=False, batch_size=100, anonymize_fields=[], remove_fields=[], rename_fields=[]):
 """ read the json file provided and POST in batches no bigger than the batch_size specified to the specified url. """

    batch = []
    json_data = json.loads(json_file.read())

    if isinstance(json_data, list):
        for item in json_data:

            # anonymize fields
            for field_name in anonymize_fields:
                if field_name in item:
                    item[field_name] = md5sum(item[field_name])

            # remove fields
            for field_name in remove_fields:
                if field_name in item:
                    del item[field_name]

            # rename fields
            for (field_name, new_field_name) in rename_fields:
                if field_name in item:
                    item[new_field_name] = item[field_name]
                    del item[field_name]

            batch.append(item)

            if len(batch) >= batch_size:
                post(batch,
                     url,
                     dry_run=dry_run)
                batch = []

        if len(batch) > 0:
            post(batch,
                 url,
                 dry_run=dry_run)

    else:
        post(json_data,
             url,
             dry_run=dry_run)