10 examples of 'list comprehension' in Python

231
def is_comprehension(x):
232
    """Returns true if this is a comprehension type."""
233
    return isinstance(x, (ObjectComprehension, SetComprehension, ArrayComprehension))

126
@abstractmethod
127
def visit_list_comprehension(self, o: 'mypy.nodes.ListComprehension') -> T:
128
    pass

1042
@utils.check_messages("using-constant-test", "missing-parentheses-for-call-in-test")
1043
def visit_comprehension(self, node):
1044
    if node.ifs:
1045
        for if_test in node.ifs:
1046
            self._check_using_constant_test(node, if_test)

19
def test_filtering_lists_with_list_comprehensions(self):
20
    feast = ['spam', 'sloths', 'orangutans', 'breakfast cereals',
21
        'fruit bats']
22
23
    comprehension = [delicacy for delicacy in feast if len(delicacy) > 6]
24
25
    self.assertEqual(5, len(feast))
26
    self.assertEqual(3, len(comprehension))

45
def create_comprehension(for_node: ast.For) -> ast.comprehension:
46
    return ast.comprehension(target=for_node.target, iter=for_node.iter, ifs=[])

500
def visit_list_comprehension(self, o: 'mypy.nodes.ListComprehension') -> str:
501
    return self.dump([o.generator], o)

32
@property
33
def iterable(self):
34
    return self._args[1]

929
@backtrackable
930
@memoize
931
def parse_comprehension_iter(self):
932
    """
933
    rule =
934
        | comprehension_for
935
        | comprehension_where
936
    """
937
    result = self.parse_comprehension_for()
938
    if result is None:
939
        result = self.parse_comprehension_where()
940
941
    return result

2845
def p_comp_for2(p):
2846
    ''' comp_for : FOR exprlist IN or_test comp_iter '''
2847
    target = p[2]
2848
    set_context(target, Store, p)
2849
    gens = []
2850
    gens.append(ast.comprehension(target=target, iter=p[4], ifs=[]))
2851
    for item in p[5]:
2852
        if isinstance(item, ast.comprehension):
2853
            gens.append(item)
2854
        else:
2855
            gens[-1].ifs.append(item)
2856
    p[0] = gens

40
def wrong_comprehension2():
41
    return [
42
        target  # noqa: WPS224
43
        for assignment in range(hex_number)
44
        for target in range(assignment)
45
        for _ in range(10)
46
        if isinstance(target, int)
47
    ]