#
# µû¶óÇÏ¸ç ¹è¿ì´Â ÆÄÀ̽ã°ú µ¥ÀÌÅÍ°úÇÐ(»ý´ÉÃâÆÇ»ç 2020)
# 7.14 Á¶°ÇÀÌ ºÙ´Â ¸®½ºÆ® ÇÔÃà Ç¥Çöµµ °¡´ÉÇÏ´Ù, 189ÂÊ
#
s = ["Hello", "12345", "World", "67890"]
numbers = [x for x in s if x.isdigit()]
print(numbers)