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A comment on Efficient String Concatenation in Python.
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My own testing (https://gist.github.com/TimZehta/5435216) reveals:
Loops: 1,000,000
method1, 0.297 seconds, 11296 KB method3, 0.568 seconds, 17084 KB method4, 0.366 seconds, 66732 KB method5, 0.483 seconds, 20840 KB method6, 0.251 seconds, 15600 KB
Sorry for the enigmatic names (started with code form linked article), but I've run out of time.
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Better data can be found via a search engine.
My own testing (https://gist.github.com/TimZehta/5435216) reveals:
Loops: 1,000,000
method1, 0.297 seconds, 11296 KB method3, 0.568 seconds, 17084 KB method4, 0.366 seconds, 66732 KB method5, 0.483 seconds, 20840 KB method6, 0.251 seconds, 15600 KB
Sorry for the enigmatic names (started with code form linked article), but I've run out of time.