python 在文本中找出，长度超过4的单词

'''
     在以下⽂本中找出 每⾏中长度超过4的单词:
            Call me Ishmael. Some years ago - never mind how long precisely - having
            little or no money in my purse, and nothing particular to interest me
            on shore, I thought I would sail about a little and see the watery part
            of the world. It is a way I have of driving off the spleen, and regulating
            the circulation. - Moby Dick

'''

a = ''' Call me Ishmael. Some years ago - never mind how long precisely - having
little or no money in my purse, and nothing particular to interest me
on shore, I thought I would sail about a little and see the watery part
of the world. It is a way I have of driving off the spleen, and regulating
the circulation. - Moby Dick'''

# [i for i in a.split('\n')]  换行分割文本

lst = [[j for j in i.split(' ')if len(j)>4]for i in a.split('\n')]

print(lst)