metasyntactic-variable

Underscore _ as variable name in Python

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Peter Norvig has an essay describing a program to solve sudoku puzzles, even the hardest ones, by combining deterministic logical operations and smart traversal of the possible solutions. The latter is done recursively; here’s that function (source): def search(values): "Using depth-first search and propagation, try all possible values." if values is False: return False ## … Read more