Python: Remove lowercase substrings from a given string

Last update on March 31 2025 12:57:11 (UTC/GMT +8 hours)

53. Remove Lowercase Substrings

Write a Python program to remove lowercase substrings from a given string.

Sample Solution:

Python Code:

import re
str1 = 'KDeoALOklOOHserfLoAJSIskdsf'
print("Original string:")
print(str1)
print("After removing lowercase letters, above string becomes:")
remove_lower = lambda text: re.sub('[a-z]', '', text)
result =  remove_lower(str1)
print(result)

Sample Output:

Original string:
KDeoALOklOOHserfLoAJSIskdsf
After removing lowercase letters, above string becomes:
KDALOOOHLAJSI

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to remove all contiguous sequences of lowercase letters from a string and print the result.
• Write a Python script to delete any substring composed entirely of lowercase letters from a given text.
• Write a Python program to search for and eliminate lowercase-only words from a sentence using regex.
• Write a Python program to strip out lowercase substrings from a mixed-case string and output the modified string.

Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to insert spaces between words starting with capital letters.
Next: Write a Python program to concatenate the consecutive numbers in a given string.