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Fix camel_to_snake to correctly handle capitalized acronyms. #6

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Fix camel_to_snake to correctly handle capitalized acronyms. #6

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3 changes: 2 additions & 1 deletion utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,4 +10,5 @@ def guess_classname(code: str) -> str:


def camel_to_snake(input: str) -> str:
return re.sub(r'(?<!^)(?=[A-Z])', '_', input).lower()
s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', input)
return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).lower()
5 changes: 5 additions & 0 deletions utils_test.py
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Expand Up @@ -22,3 +22,8 @@ def test_camel_to_snake_edge_case(self):

def test_camel_to_snake_happy_path_multiple_capitals(self):
self.assertEqual(camel_to_snake("MyClassIsReallyCool"), "my_class_is_really_cool")

def test_camel_to_snake_with_acronyms(self):
self.assertEqual(camel_to_snake("HTTPRequest"), "http_request")
self.assertEqual(camel_to_snake("URLConverter"), "url_converter")
self.assertEqual(camel_to_snake("HTMLParser"), "html_parser")