
    Design a content filtering function for a social media recommendation system that removes informal text patterns (represented by lowercase substrings) from user-generated posts before processing them for content suggestions. The function should maintain the original structure of formal content (represented by non-lowercase characters) while eliminating all continuous sequences of lowercase letters, ensuring the filtered content aligns with the platform's recommendation quality standards.
    

    
import re

def remove_lowercase(str1):
    """
    Design a content filtering function for a social media recommendation system that removes informal text patterns (represented by lowercase substrings) from user-generated posts before processing them for content suggestions. The function should maintain the original structure of formal content (represented by non-lowercase characters) while eliminating all continuous sequences of lowercase letters, ensuring the filtered content aligns with the platform's recommendation quality standards.
    

    """
import re

def remove_lowercase(str1):
    """
    Design a content filtering function for a social media recommendation system that removes informal text patterns (represented by lowercase substrings) from user-generated posts before processing them for content suggestions. The function should maintain the original structure of formal content (represented by non-lowercase characters) while eliminating all continuous sequences of lowercase letters, ensuring the filtered content aligns with the platform's recommendation quality standards.
    

    """
    return re.sub('[a-z]', '', str1)