33 lines
1016 B
Python
33 lines
1016 B
Python
# reader.py
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import csv
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def convert_csv(lines, converter, *, headers=None):
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rows = csv.reader(lines)
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if headers is None:
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headers = next(rows)
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return list(map(lambda row: converter(headers, row), rows))
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def csv_as_dicts(lines, types, *, headers=None):
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return convert_csv(lines,
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lambda headers, row: { name: func(val) for name, func, val in zip(headers, types, row) })
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def csv_as_instances(lines, cls, *, headers=None):
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return convert_csv(lines,
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lambda headers, row: cls.from_row(row))
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def read_csv_as_dicts(filename, types, *, headers=None):
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'''
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Read CSV data into a list of dictionaries with optional type conversion
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'''
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with open(filename) as file:
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return csv_as_dicts(file, types, headers=headers)
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def read_csv_as_instances(filename, cls, *, headers=None):
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'''
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Read CSV data into a list of instances
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'''
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with open(filename) as file:
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return csv_as_instances(file, cls, headers=headers)
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