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snippets/python/s/decapitalize.md

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+---
+title: Decapitalize string
+type: snippet
+language: python
+tags: [string]
+cover: succulent-crowd
+dateModified: 2020-11-02T19:27:53+02:00
+---
+
+Decapitalizes the first letter of a string.
+
+- Use list slicing and `str.lower()` to decapitalize the first letter of the string.
+- Use `str.join()` to combine the lowercase first letter with the rest of the characters.
+- Omit the `upper_rest` parameter to keep the rest of the string intact, or set it to `True` to convert to uppercase.
+
+```py
+def decapitalize(s, upper_rest = False):
+  return ''.join([s[:1].lower(), (s[1:].upper() if upper_rest else s[1:])])
+```
+
+```py
+decapitalize('FooBar') # 'fooBar'
+decapitalize('FooBar', True) # 'fOOBAR'
+```