Stone CLI and importing custom helpers

[diwakergupta]

I'm splitting the Go SDK generator into a types generator and a client generator. To do this, I've introduced a go_helpers module. But I'm having trouble using the helper when invoking the stone helper script. Specifically, this does not work:

$ stone -a :all -v "go_client.stoneg.py" "$gen_dir" "$spec_dir"/*.stone
...
error: Importing generator 'go_client.stoneg.py' module raised an exception:
Traceback (most recent call last):
  File "/usr/local/bin/stone", line 9, in <module>
    load_entry_point('stone==0.1', 'console_scripts', 'stone')()
  File "/usr/local/lib/python3.5/site-packages/stone-0.1-py3.5.egg/stone/cli.py", line 303, in main
    generator_module = imp.load_source('user_generator', args.generator)
  File "/usr/local/Cellar/python3/3.5.2/Frameworks/Python.framework/Versions/3.5/lib/python3.5/imp.py", line 172, in load_source
    module = _load(spec)
  File "<frozen importlib._bootstrap>", line 693, in _load
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 665, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "go_client.stoneg.py", line 1, in <module>
    from go_helpers import HEADER
ImportError: No module named 'go_helpers'

But this does:

$ python3 -m stone.cli -v go_client.stoneg.py /tmp dropbox-api-spec/*.stone
...
INFO:stone.compiler:Running generator: GoTypesGenerator

[braincore]

I assume go_helpers is only in your python path because it's in your current working directory?

[diwakergupta]

@braincore correct

[braincore]

I'm actually not sure what to do here. The root cause is that the python path is different when called via the entry point vs. invoking python directly. The recommendation is for the entire generator to be in a single module when it isn't built-in to stone.

[braincore]

@zjiuyang also ran into this so I fixed it in c7c5817.