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DOCUMENTATION:
name: product
version_added: "historical"
short_description: cartesian product of lists
description:
- Combines two lists into one with each element being the product of the elements of the input lists.
- Creates 'nested loops'. Looping over C(listA) and C(listB) is the same as looping over C(listA | product(listB)).
notes:
- This is a passthrough to Python's C(itertools.product)
positional: _input, _additional_lists, repeat
options:
_input:
description: First list.
type: list
required: true
_additional_lists: #TODO: *args, N possible additional lists
description: Additional list for the product.
type: list
required: false
repeat:
description: Number of times to repeat the product against itself.
default: 1
type: int
EXAMPLES: |
# product => [ [ 1, "a" ], [ 1, "b" ], [ 1, "c" ], [ 2, "a" ], [ 2, "b" ], [ 2, "c" ], [ 3, "a" ], [ 3, "b" ], [ 3, "c" ], [ 4, "a" ], [ 4, "b" ], [ 4, "c" ], [ 5, "a" ], [ 5, "b" ], [ 5, "c" ] ]
product: "{{ [1,2,3,4,5] | product(['a', 'b', 'c']) }}"
# repeat_original => [ [ 1, 1 ], [ 1, 2 ], [ 2, 1 ], [ 2, 2 ] ]
repeat_original: "{{ [1,2] | product(repeat=2) }}"
# repeat_product => [ [ 1, "a", 1, "a" ], [ 1, "a", 1, "b" ], [ 1, "a", 2, "a" ], [ 1, "a", 2, "b" ], [ 1, "b", 1, "a" ], [ 1, "b", 1, "b" ], [ 1, "b", 2, "a" ], [ 1, "b", 2, "b" ], [ 2, "a", 1, "a" ], [ 2, "a", 1, "b" ], [ 2, "a", 2, "a" ], [ 2, "a", 2, "b" ], [ 2, "b", 1, "a" ], [ 2, "b", 1, "b" ], [ 2, "b", 2, "a" ], [ 2, "b", 2, "b" ] ]
repeat_product: "{{ [1,2] | product(['a', 'b'], repeat=2) }}"
# domains => [ 'example.com', 'ansible.com', 'redhat.com' ]
domains: "{{ [ 'example', 'ansible', 'redhat'] | product(['com']) | map('join', '.') }}"
RETURN:
_value:
description: List of lists of combined elements from the input lists.
type: list
elements: list
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