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39
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 fields CSV
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6 """
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7
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8 # imports
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9 import csv
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10 string = (str, unicode)
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11
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12 class FieldsCSV(object):
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13 """fields-based CSV"""
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14
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15 fields = [] # ABC
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16
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17 @classmethod
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18 def names(cls):
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19 return [field[0] for field in cls.fields]
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20
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21 def parse(f):
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22 if isinstance(f, string):
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23 with open(f) as _f:
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24 return self.parse(_f)
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25
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40
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26 reader = csv.reader(f)
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27 retval = []
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28 for row in reader:
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29
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30 # ensure row length is correct
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31 if len(row) != len(self.fields):
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32 raise Exception("{} | Unrecognized summary row: {}".format(f.name, row))
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33
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34 # make a data object
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35 values = dict(zip(self.names(), row))
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39
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36
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40
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37 # convert
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38 try:
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39 for name, _type in self.fields:
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40 values[name] = _type(values[name])
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41 except Exception as e:
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42 raise Exception("{} | Unable to convert row: {}".format(f.name, e))
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43
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44 retval.append(values)
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45 return values
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46
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