./python -m timeit -s "from fractions import Fraction as F" "F(123)"
200000 loops, best of 5
Master: 1.42 usec
PR: 1.55 usec

./python -m timeit -s "from fractions import Fraction as F" "F(1.23)"
100000 loops, best of 5
Master: 2.92 usec per loop
PR: 2.14 usec

 ./python -m timeit -s "from fractions import Fraction as F; f = F(22, 7)" "F(f)"
100000 loops, best of 5
Master: 2.47 usec
PR: 1.93 usec

./python -m timeit -s "from statistics import mean; a = [1]*1000" "mean(a)"
500 loops, best of 5
Master: 930 usec
PR: 640 usec

./python -m timeit -s "from statistics import mean; a = [1.23]*1000" "mean(a)"
200 loops, best of 5
Master: 1.31 msec
PR: 1.34 msec

./python -m timeit -s "from statistics import mean; from fractions import Fraction as F; a = [F(22, 7)]*1000" "mean(a)"
200 loops, best of 5
Master: 1.31 msec
PR: 1.09 msec

./python -m timeit -s "from statistics import mean; from decimal import Decimal as D; a = [D('1.23')]*1000" "mean(a)"
100 loops, best of 5
Master: 2.08 msec
PR: 2 msec