for_list

Loop the list of list or dict and create a new list to output.

Description

• Loop the list of list or dict and create a new list to output.

Parameters

Parameter	Type	Required	Default	Comment
expression	expression	Yes	-	Expression of a item for a created list. Item in the loop of list can be referred as item*. Item in the loop of dict can be referred as item*_val and item*_key. For the first loop item can be referred as item0. For the second loop item can be referred as item1.
filter	expression	No	None	Condition not to add item for a crated list. Loop item can be refereed as same as in expression.
lists	list[list|dict]	Yes	-	List of list or dict to make a nested loop. Single list or dict can be passed.
out_bb	bool	No	False
out_field	str	No	None

Examples

# Create a list from list of list with filter parameter.
# Output: {'for_list': [3, 4, 6]}
- for_list:
    name: "for_list"
    lists: [[1, 2], [3, 4]]
    expression: "item0*item1"
    filter: "item0*item1>7"

# Create a list from list of list and dict.
# Output: {'for_list': ['head1:val1', 'head1:val2', 'head2:val1', 'head2:val2']}
- for_list:
    name: "for_list"
    lists: [["head1", "head2"], {"name1": "val1", "name2": "val2"}]
    expression: "item0 + ':' + item1_val"

# Create a list from a single list.
# Output: {'for_list': [2, 4, 6]}
- for_list:
    name: "for_list"
    lists: [1, 2, 3, 4]
    expression: "item0*2"
    filter: "item0*2>7"

# Create a list from a dict.
# Output: {'for_list': ["key1-1", "key2-2"]}
- for_list:
    name: "for_list"
    lists: {"key1": 1, "key2": 2}
    expression: "item0_key + '-' + item0_val | str"

# Create a list from nested lists of a dict.
# Output: {'for_list': ["hello, world", "foobar"]}
- for_list:
    name: "for_list"
    lists: [[{"first": "hello, ", "second": "world"}, {"first": "foo", "second": "bar"}]]
    expression:  "item0.first + item0.second"