Regex in Python to put spaces between words starting with capital letters
Given an array of characters, which is basically a sentence. However, there is no space between different words and the first letter of every word is in uppercase. You need to print this sentence after the following amendments:
- Put a single space between these words.
- Convert the uppercase letters to lowercase.
Examples:
Input : BruceWayneIsBatman Output : bruce wayne is batman Input : GeeksForGeeks Output : geeks for geeks
We have an existing solution for this problem, please refer Put spaces between words starting with capital letters link.
We can solve this problem quickly in python using findall() method of re (regex) library.
Approach :
- Split each word starting with a capital letter using re.findall(expression, str) method.
- Now change the capital letter of each word to lowercase and concatenate each word with space.
Python3
import re def putSpace(input): # regex [A-Z][a-z]* means any string starting # with capital character followed by many # lowercase letters words = re.findall('[A-Z][a-z]*', input) # Change first letter of each word into lower # case for i in range(0,len(words)): words[i]=words[i][0].lower()+words[i][1:] print(' '.join(words)) # Driver programif __name__ == "__main__": input = 'BruceWayneIsBatman' putSpace(input) |
Output:
bruce wayne is batman
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