test_csv.py 文件源码

def test_delimiters(self):
        sniffer = csv.Sniffer()
        dialect = sniffer.sniff(self.sample3)
        # given that all three lines in sample3 are equal,
        # I think that any character could have been 'guessed' as the
        # delimiter, depending on dictionary order
        self.assertIn(dialect.delimiter, self.sample3)
        dialect = sniffer.sniff(self.sample3, delimiters="?,")
        self.assertEqual(dialect.delimiter, "?")
        dialect = sniffer.sniff(self.sample3, delimiters="/,")
        self.assertEqual(dialect.delimiter, "/")
        dialect = sniffer.sniff(self.sample4)
        self.assertEqual(dialect.delimiter, ";")
        dialect = sniffer.sniff(self.sample5)
        self.assertEqual(dialect.delimiter, "\t")
        dialect = sniffer.sniff(self.sample6)
        self.assertEqual(dialect.delimiter, "|")
        dialect = sniffer.sniff(self.sample7)
        self.assertEqual(dialect.delimiter, "|")
        self.assertEqual(dialect.quotechar, "'")
        dialect = sniffer.sniff(self.sample8)
        self.assertEqual(dialect.delimiter, '+')
        dialect = sniffer.sniff(self.sample9)
        self.assertEqual(dialect.delimiter, '+')
        self.assertEqual(dialect.quotechar, "'")