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Revision 14820

lib/sql_io.py: null_strs: made it customizable from an env var, since the same list of null_strs doesn't work for all datasources (see #957)

View differences:

trunk/lib/sql_io.py
3 3
import copy
4 4
import csv
5 5
import operator
6
import os
6 7
import warnings
7 8
import sys
8 9

  

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