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Message: [QUOTE="Fredrik Lundh, post: 1850440"] the OP's question was How you do this in a practic way without the use of one-line code ? the OPs code contains five reads and three writes, my and steven's versions contain four reads and three writes. the yet-to-be-released ternary operator would remove one read from the OPs code, which makes both alternatives equivalent. dictionary accesses don't involve passes over the dictionary. there's a comment on readability and code understanding waiting to be made here, but I'll leave that for another day. </F> [/QUOTE]