如何查找以特定字符开头的单词

Question

我想整理出python中用's'开头的单词.
这是我的代码:

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

但代码的结果是:

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

如何编写有关正则表达式的代码？或者,有什么方法可以整理单词吗？

Answer 1

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

对于小写和大写s使用:r'\b[sS]\w+'

Answer 2

我知道它不是正则表达式解决方案,但你可以使用 startswith

>>> text="I was searching my source to make a big desk yesterday."
>>> [ t for t in text.split() if t.startswith('s') ]
['searching', 'source']
>>>