Interactive shell

[alanjds]

google#9 opened by @waitingkuo on 4 Jan 2017

Is it possible to launch a python interactive shell?

[alanjds]

Comment by trotterdylan
Wednesday Jan 04, 2017 at 19:26 GMT

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Currently the best option is "make run", like this:

$ make run
print 'hola'
^D

I'll leave this issue open to track progress on a nicer interactive experience.

[alanjds]

I was thinking about this for a bit of time:

For me, the problem is the same of eval. How to have a running context and provide new code compiled after the first one?

Right now, I see two ways:

1. Use an interpreter
2. Compile and link the new code

For the interpreter, the https://github.com/RustPython/RustPython guys are building a promissing bytecode interpreter of CPython bytecodes. I can imagine Grumpy the future falling back to use it, or to have an own interpreter just to run eval stuff, but is unlikely.

A more feasible approach is to compile a dylib and link to the running grumpy process via the plugin feature of recent Go runtimes. The downside is that it needs a complete Go toolchain in the machine trying to do an eval, or access to a remote one with such capability plus the confidence to use external binary blobs.