def remove_lowercase(str1):
  import re
  
  remove_lower = lambda text: re.sub('[a-z]', '', text)
  result =  remove_lower(str1)
  return (result)
def is_not_prime(n):
    import math
    
    result = False
    for i in range(2,int(math.sqrt(n)) + 1):
        if n % i == 0:
            result = True
    return result