仅提取首字母大写的整个单词

Question

I have a text file need to be analyzed here, what I am interested is only the whole word with the first letter capitalized,

For example: test string: Everyday HOLDS the poSSibility Of A Miracle

I want to capture: Everyday Of A Miracle

I am currently trying to build my regular expression in Python, strangely, my regex only can capture the first whole word that is captalized.

Test String: Everyday HOLDS the poSSibility Of A Miracle

My regex: ^([AZ])?([az])+

Capture: Everyday

What am I missing here ?

Answer 1

Instead of anchoring the regex at the beginning of the string, utilize boundary checking:

import re
s = 'Everyday HOLDS the poSSibility Of A Miracle'
new_s = ' '.join(re.findall(r'\b[A-Z][a-z]+|\b[A-Z]\b', s))

Output:

'Everyday Of A Miracle'

Answer 2

Without regex (only if words are delimited by whitespaces):

>>> s='Everyday HOLDS the poSSibility Of A Miracle'
>>> [x for x in s.split() if x.title()==x]
['Everyday', 'Of', 'A', 'Miracle']

Note that you can also use re.split to split on any non-letter characters.