Python: convert types of values in dict that was creates by the csv.DictReader

convert_dict_types.py

"""
Originally wrote this to convert string values in dict created by csv.DictReader to int, float and bool.
Expects dictionary to be one-level (does not recurse into sub-dictionaries) and values to be type String.
"""

def convert_types(dict):
    """
    Modifies types of values in dict in place
    """
    def str2bool(value):
        if value.lower() in ('true', 'false'):
            return bool(value)
        else:
            raise ValueError

    # try conversions in this order:
    fxs = [ int, float, str2bool ]

    for key, value in dict.iteritems():
        for f in fxs:
            try:
                dict[key] = f(value)
                break
            except ValueError:
                pass

    return dict