Moreover, in my own experience with Sage, the speedups from Psycho were not significant, except on code that had an obvious C equivalent. Such code can be easily rewritten in Cython, which always results in something that is faster, more robust, and more reliable than what Pyscho produces, and which can be debugged using gdb.
Though Psycho is not included with or used by Sage, it is possible to try out Psycho by installing it and putting the appropriate line at the top of a file.
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