import re


def extract_form_data(data):
    """
    Convert all keys in data dictionary from underscore_format to
    camelCaseFormat and return the new dict
    """
    to_upper = lambda match: match.group(1).upper()
    to_camel = lambda x: re.sub("_([a-z])", to_upper, x)
    return dict(map(lambda x: (to_camel(x[0]), x[1]), data.items()))