File: _testcapi.py

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from importlib.util import spec_from_file_location, module_from_spec
import os

try:
    import cpyext
except ImportError:
    pass   # no 'cpyext', but we still have to define e.g. awaitType
else:
    import _pypy_testcapi
    cfile = '_testcapimodule.c'
    thisdir = os.path.dirname(__file__)
    output_dir = _pypy_testcapi.get_hashed_dir(os.path.join(thisdir, cfile))
    modfile = '_testcapi' + _pypy_testcapi._get_c_extension_suffix()
    spec = spec_from_file_location('_testcapi',
                                   os.path.join(thisdir, modfile))
    try:
        module_from_spec(spec)
    except ImportError:
        if os.name == 'nt':
            # hack around finding compilers on win32
            try:
                import setuptools
            except ImportError:
                pass
        mod = _pypy_testcapi.compile_shared(cfile, '_testcapi', thisdir)

class awaitType:
    def __init__(self, iterator):
        self._iterator = iterator
    def __await__(self):
        return self._iterator

# the hacks above have replaced this module with another, so we need
# to push the extra names into this other module too...
import _testcapi
_testcapi.awaitType = awaitType