26 lines
632 B
Markdown
26 lines
632 B
Markdown
---
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title: snake
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tags: string,regexp,intermediate
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---
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Converts a string to snake case.
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Break the string into words and combine them adding `_-_` as a separator, using a regexp.
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```py
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import re
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def snake(str):
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return re.sub(r"(\s|_|-)+","-",
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re.sub(r"[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+",
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lambda mo: mo.group(0).lower(),str)
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)
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```
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```py
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snake('camelCase'); # 'camel_case'
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snake('some text'); # 'some_text'
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snake('some-mixed_string With spaces_underscores-and-hyphens'); # 'some_mixed_string_with_spaces_underscores_and_hyphens'
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snake('AllThe-small Things'); # "all_the_smal_things"
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```
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