Related Articles

Python – Add Space between Potential Words

• Last Updated : 01 Aug, 2020

Given list of Strings, task is to add a space before sequence which begin with capital letters.

Input : test_list = [“gfgBest”, “forGeeks”, “andComputerScienceStudents”]
Output : [‘gfg Best’, ‘for Geeks’, ‘and Computer Science Students’]
Explanation : Words segregated by Capitals.

Input : test_list = [“ComputerScienceStudentsLoveGfg”]
Output : [‘Computer Science Students Love Gfg’]
Explanation : Words segregated by Capitals.

Method #1 : Using loop + join()

This is one of the ways in which this task can be perfomed. In this, we perform the task of iterating all the stings and then all the characters before adding space using loop in brute force manner. The isupper() is used to check for capital character.

Python3

 `# Python3 code to demonstrate working of ``# Add Space between Potential Words``# Using loop + join()`` ` `# initializing list``test_list ``=` `[``"gfgBest"``, ``"forGeeks"``, ``"andComputerScience"``]`` ` `# printing original list``print``(``"The original list : "` `+` `str``(test_list))`` ` `res ``=` `[]`` ` `# loop to iterate all strings ``for` `ele ``in` `test_list:``    ``temp ``=` `[[]]``    ``for` `char ``in` `ele:``         ` `        ``# checking for upper case character``        ``if` `char.isupper():``            ``temp.append([])``             ` `        ``# appending character at latest list``        ``temp[``-``1``].append(char)``     ` `    ``# joining lists after adding space``    ``res.append(``' '``.join(''.join(ele) ``for` `ele ``in` `temp))`` ` `# printing result ``print``(``"The space added list of strings : "` `+` `str``(res))`
Output
```The original list : ['gfgBest', 'forGeeks', 'andComputerScience']
The space added list of strings : ['gfg Best', 'for Geeks', 'and Computer Science']
```

Method #2 : Using regex() + list comprehension

The combination of above functions can also be used to solve this problem. In this we employ regex code to check for upper case letter and perform space addition and joining using list comprehension.

Python3

 `# Python3 code to demonstrate working of ``# Add Space between Potential Words``# Using regex() + list comprehension``import` `re`` ` `# initializing list``test_list ``=` `[``"gfgBest"``, ``"forGeeks"``, ``"andComputerScience"``]`` ` `# printing original list``print``(``"The original list : "` `+` `str``(test_list))`` ` `# using regex() to perform task ``res ``=` `[re.sub(r``"(\w)([A-Z])"``, r``"\1 \2"``, ele) ``for` `ele ``in` `test_list]`` ` `# printing result ``print``(``"The space added list of strings : "` `+` `str``(res))`
Output
```The original list : ['gfgBest', 'forGeeks', 'andComputerScience']
The space added list of strings : ['gfg Best', 'for Geeks', 'and Computer Science']
```

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course

My Personal Notes arrow_drop_up