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Fix snakecase converter for strings with multi-digit numbers #519

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Fix snakecase converter for strings with multi-digit numbers #519

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12 changes: 8 additions & 4 deletions dataclasses_json/stringcase.py
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Original file line number Diff line number Diff line change
Expand Up @@ -95,10 +95,14 @@ def snakecase(string):
string = re.sub(r"[\-\.\s]", '_', str(string))
if not string:
return string
return (uplowcase(string[0], 'low')
+ re.sub(r"[A-Z0-9]",
lambda matched: '_' + uplowcase(matched.group(0), 'low'),
string[1:]))
return uplowcase(
'_'.join(
re.sub(
'([A-Z][a-z]+)', r' \1',
re.sub('([A-Z]+)', r' \1', string.replace('-', ' '))
).split()
), 'low'
)


def spinalcase(string):
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