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import os
import parso
def get_python_files(path):
for dir_path, dir_names, file_names in os.walk(path):
for file_name in file_names:
if file_name.endswith('.py'):
yield os.path.join(dir_path, file_name)
def test_on_itself(each_version):
"""
There are obviously no syntax erros in the Python code of parso. However
parso should output the same for all versions.
"""
grammar = parso.load_grammar(version=each_version)
path = os.path.dirname(os.path.dirname(__file__)) + '/parso'
for file in get_python_files(path):
tree = grammar.parse(path=file)
errors = list(grammar.iter_errors(tree))
assert not errors
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