import csv

def convert_csv(lines, converter, *, headers=None):

return list(map(lambda row: converter(headers, row), rows))

def csv_as_dicts(lines, types, *, headers=None):

return convert_csv(lines,

lambda headers, row: {name: func(val) for name, func, val in zip(headers, types, row)},

headers=headers)

def csv_as_instances(lines, cls, *, headers=None):

return convert_csv(lines,

lambda headers, row: cls.from_row(row),

headers=headers)

def read_csv_as_dicts(filename, types, *, headers=None):

return csv_as_dicts(file, types, headers=headers)

def read_csv_as_instances(filename, cls, *, headers=None):

return csv_as_instances(file, cls, headers=headers)