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snippets/python/s/words.md

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+---
+title: String to words
+type: snippet
+language: python
+tags: [string,regexp]
+cover: rocky-lake
+dateModified: 2020-11-02T19:28:35+02:00
+---
+
+Converts a given string into a list of words.
+
+- Use `re.findall()` with the supplied `pattern` to find all matching substrings.
+- Omit the second argument to use the default regexp, which matches alphanumeric and hyphens.
+
+```py
+import re
+
+def words(s, pattern = '[a-zA-Z-]+'):
+  return re.findall(pattern, s)
+```
+
+```py
+words('I love Python!!') # ['I', 'love', 'Python']
+words('python, javaScript & coffee') # ['python', 'javaScript', 'coffee']
+words('build -q --out one-item', r'\b[a-zA-Z-]+\b')
+# ['build', 'q', 'out', 'one-item']
+```