def GetBuiltins():
"""Get the "default" AST used to lookup built in types.
Get an AST for all Python builtins as well as the most commonly used standard
libraries.
Returns:
A pytd.TypeDeclUnit instance. It'll directly contain the builtin classes
and functions, and submodules for each of the standard library modules.
"""
builtins = parser.parse_file(utils.GetDataFile("builtins/__builtin__.pytd"))
for mod in [
"array", "errno", "fcntl", "gc", "itertools", "marshal", "posix", "pwd",
"select", "signal", "_sre", "_struct", "strop", "sys", "_warnings",
"_weakref"]:
builtins.modules[mod] = parser.parse_file(
utils.GetDataFile("builtins/" + mod + ".pytd"))
return builtins
def setUp(self):
with open(utils.GetDataFile("examples/StringIO.py"), "r") as infile:
self.ty = self.Infer(infile.read())
try:
self.stringio_cls = self.ty.Lookup("StringIO")
except KeyError:
self.stringio_cls = None
# Continue to the test it will fail if it needs the cls
self.stringio_type = pytd.ClassType("StringIO")
self.stringio_type.cls = self.stringio_cls
def setUp(self):
with open(utils.GetDataFile("examples/pytree.py"), "r") as infile:
self.ty = self.Infer(infile.read())
def testGetDataFileReturnsString(self):
# smoke test, only checks that it doesn't throw and the result is a string
self.assertIsInstance(utils.GetDataFile("builtins/errno.pytd"), str)
def _FindBuiltinFile(name):
return utils.GetDataFile(os.path.join("builtins", name))
