from __future__ in the main file causes SyntaxError

[sjincho]

If the main python script contains from __future__ import ... statements, running par file causes the following error:

$ ./train.par
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 165, in _run_module_as_main
    mod_name, loader, code, fname = _get_main_module_details(_Error)
  File "/usr/lib/python2.7/runpy.py", line 133, in _get_main_module_details
    return _get_module_details(main_name)
  File "/usr/lib/python2.7/runpy.py", line 119, in _get_module_details
    code = loader.get_code(mod_name)
  File "./train.par/__main__.py", line 74
SyntaxError: from __future__ imports must occur at the beginning of the file

This seems to be due to the boilerplate added by subpar compiler before the __future statements.:

# Boilerplate added by subpar/compiler/python_archive.py
from subpar.runtime import support as _
_.setup(import_roots=[u'__main__', u'six_archive'])
del _
# End boilerplate

[duggelz]

Can you please link to your exact source code? I have code specifically to handle future imports (

subpar/compiler/python_archive.py

Line 163 in b1b6bd1

# Find a good place to insert the boilerplate, which is the

) but it's regular expression based, rather than a real parser, so it probably needs a tweak.

See original issue #4

[sjincho]

This is the source I'm trying:
https://github.com/tensorflow/tensorflow/blob/master/tensorflow/examples/speech_commands/train.py

[duggelz]

Aha, I did not realize that doc comments were allowed before future imports. Should be an easy fix, although I'm travelling so it will be a little while.

Note to self, the documented semantics of future imports: https://docs.python.org/2/reference/simple_stmts.html#future

[jarondl]

It seems like this was fixed in #67 and can be closed, right?