1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
from __future__ import absolute_import, print_function, division
# complement()
##############
import petl as etl
a = [['foo', 'bar', 'baz'],
['A', 1, True],
['C', 7, False],
['B', 2, False],
['C', 9, True]]
b = [['x', 'y', 'z'],
['B', 2, False],
['A', 9, False],
['B', 3, True],
['C', 9, True]]
aminusb = etl.complement(a, b)
aminusb
bminusa = etl.complement(b, a)
bminusa
# recordcomplement()
####################
import petl as etl
a = [['foo', 'bar', 'baz'],
['A', 1, True],
['C', 7, False],
['B', 2, False],
['C', 9, True]]
b = [['bar', 'foo', 'baz'],
[2, 'B', False],
[9, 'A', False],
[3, 'B', True],
[9, 'C', True]]
aminusb = etl.recordcomplement(a, b)
aminusb
bminusa = etl.recordcomplement(b, a)
bminusa
# diff()
########
import petl as etl
a = [['foo', 'bar', 'baz'],
['A', 1, True],
['C', 7, False],
['B', 2, False],
['C', 9, True]]
b = [['x', 'y', 'z'],
['B', 2, False],
['A', 9, False],
['B', 3, True],
['C', 9, True]]
added, subtracted = etl.diff(a, b)
# rows in b not in a
added
# rows in a not in b
subtracted
# recorddiff()
##############
import petl as etl
a = [['foo', 'bar', 'baz'],
['A', 1, True],
['C', 7, False],
['B', 2, False],
['C', 9, True]]
b = [['bar', 'foo', 'baz'],
[2, 'B', False],
[9, 'A', False],
[3, 'B', True],
[9, 'C', True]]
added, subtracted = etl.recorddiff(a, b)
added
subtracted
# intersection()
################
import petl as etl
table1 = [['foo', 'bar', 'baz'],
['A', 1, True],
['C', 7, False],
['B', 2, False],
['C', 9, True]]
table2 = [['x', 'y', 'z'],
['B', 2, False],
['A', 9, False],
['B', 3, True],
['C', 9, True]]
table3 = etl.intersection(table1, table2)
table3
|
