pyrepl

[cjdoris]

Adds pyrepl function and @pyrepl macro and repl_style preference.

These can launch a Python REPL using one of: the code stdlib, IPython, bpython or ptpython. This is controlled by the style argument.

Supports the same persistent-scope-per-module functionality as pyeval etc.

[github-actions]

Benchmark Results (Julia v1)

Time benchmarks

	main	71af657...	main / 71af657...
basic/@py/pydict/init	0.243 ± 0.054 ms	0.245 ± 0.049 ms	0.992 ± 0.3
basic/@py/pydict/pydel	0.252 ± 0.028 ms	0.262 ± 0.022 ms	0.961 ± 0.13
basic/julia/pydict/init	0.217 ± 0.069 ms	0.221 ± 0.068 ms	0.98 ± 0.43
basic/julia/pydict/pydel	0.23 ± 0.027 ms	0.226 ± 0.044 ms	1.02 ± 0.23
gc/full	0.59 ± 0.006 s	0.589 ± 0.0021 s	1 ± 0.011
time_to_load	2.08 ± 0.022 s	2.09 ± 0.011 s	0.995 ± 0.012

Memory benchmarks

	main	71af657...	main / 71af657...
basic/@py/pydict/init	5.01 k allocs: 0.0764 MB	5.01 k allocs: 0.0764 MB	1
basic/@py/pydict/pydel	5.01 k allocs: 0.0764 MB	5.01 k allocs: 0.0764 MB	1
basic/julia/pydict/init	4.01 k allocs: 0.0612 MB	4.01 k allocs: 0.0612 MB	1
basic/julia/pydict/pydel	4.01 k allocs: 0.0612 MB	4.01 k allocs: 0.0612 MB	1
gc/full	0 allocs: 0 B	0 allocs: 0 B
time_to_load	0.143 k allocs: 10.6 kB	0.143 k allocs: 10.6 kB	1