python - How to find a word that starts with a specific character

Question

I want to sort out words which are started with 's' in sentence by python.
Here is my code:

import re
text = "I was searching my source to make a big desk yesterday."
m = re.findall(r'[s]w+', text)
print m

But the result of code is :

['searching', 'source', 'sk', 'sterday'].

How do I write a code about regular expression? Or, is there any method to sort out words?

Answer 1

>>> import re
>>> text = "I was searching my source to make a big desk yesterday."
>>> re.findall(r'sw+', text)
['searching', 'source']

For lowercase and uppercase s use: r'[sS]w+'