qsrlib_utils.combinations_and_permutations module¶
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qsrlib_utils.combinations_and_permutations.
possible_pairs
(s, mirrors=True)[source]¶ Return possible pairs from a set of values.
Assume s = [‘a’, ‘b’]. Then return examples for the following calls are:
- possible_pairs(s) returns [(‘a’, ‘b’), (‘b’, ‘a’)]
- possible_pairs(s, mirros=False) returns [(‘a’, ‘b’)]
Parameters: - s (set or list or tuple) – Names of the elements from which the pairs will be created.
- mirrors (bool) – Include mirrors or not.
Returns: List of pairs as tuples.
Return type: list of tuples of str
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qsrlib_utils.combinations_and_permutations.
possible_pairs_between_two_lists
(s1, s2, mirrors=True)[source]¶ Return possible pairs between the elements of two sets.
Assume s1 = [‘a’, ‘b’] and s2 = [‘c’, ‘d’]. Then return examples for the following calls are:
- possible_pairs_between_two_lists(s1, s2) returns [(‘a’, ‘c’), (‘a’, ‘d’), (‘b’, ‘c’), (‘b’, ‘d’), (‘c’, ‘a’), (‘c’, ‘b’), (‘d’, ‘a’), (‘d’, ‘b’)].
- possible_pairs_between_two_lists(s1, s2, mirrors=False) returns [(‘a’, ‘c’), (‘a’, ‘d’), (‘b’, ‘c’), (‘b’, ‘d’)].
Parameters: - s1 (set or list or tuple) – Names of the first elements.
- s2 (set or list or tuple) – Names of the second elements.
- mirrors (bool) – Include mirrors or not.
Returns: List of pairs as tuples.
Return type: list of tuples of str