所以我有这个由数字和单词组成的文本文件,例如像09807754 18 n 03 aristocrat 0 blue_blood 0 patrician
这样,我想将它拆分,以便每个单词或数字都会作为一个新行出现。
空白分隔符是理想的,因为我希望带有破折号的单词保持连接。
这是我到目前为止所做的:
f = open('words.txt', 'r')
for word in f:
print(word)
不确定如何离开这里,我希望这是输出:
09807754
18
n
3
aristocrat
...
答案 0 :(得分:109)
如果您的数据周围没有引号,并且您一次只想要一个单词(忽略文件中空格与换行符的含义):
with open('words.txt','r') as f:
for line in f:
for word in line.split():
print(word)
如果您想要文件每行中的单词的嵌套列表(例如,要从文件创建行和列的矩阵):
with open("words.txt") as f:
[line.split() for line in f]
或者,如果要将文件展平为文件中单个单词的单词列表,可以执行以下操作:
with open('words.txt') as f:
[word for line in f for word in line.split()]
如果你想要一个正则表达式解决方案:
import re
with open("words.txt") as f:
for line in f:
for word in re.findall(r'\w+', line):
# word by word
或者,如果您希望它是一个带有正则表达式的逐行生成器:
with open("words.txt") as f:
(word for line in f for word in re.findall(r'\w+', line))
答案 1 :(得分:17)
f = open('words.txt')
for word in f.read().split():
print(word)
答案 2 :(得分:10)
作为补充, 如果您正在阅读vvvvery大文件,并且您不希望一次将所有内容都读入内存,您可以考虑使用缓冲区,然后按yield返回每个单词:
def read_words(inputfile):
with open(inputfile, 'r') as f:
while True:
buf = f.read(10240)
if not buf:
break
# make sure we end on a space (word boundary)
while not str.isspace(buf[-1]):
ch = f.read(1)
if not ch:
break
buf += ch
words = buf.split()
for word in words:
yield word
yield '' #handle the scene that the file is empty
if __name__ == "__main__":
for word in read_words('./very_large_file.txt'):
process(word)
答案 3 :(得分:3)
你可以做的是使用nltk来标记单词,然后将所有单词存储在列表中,这就是我所做的。 如果你不知道nltk;它代表自然语言工具包,用于处理自然语言。如果你想开始,这里有一些资源 [http://www.nltk.org/book/]
import nltk
from nltk.tokenize import word_tokenize
file = open("abc.txt",newline='')
result = file.read()
words = word_tokenize(result)
for i in words:
print(i)
输出将是:
09807754
18
n
03
aristocrat
0
blue_blood
0
patrician
答案 4 :(得分:0)
这是我完全功能性的方法,避免了必须阅读和分割线条。它使用itertools
模块:
itertools.imap
替换为map
import itertools
def readwords(mfile):
byte_stream = itertools.groupby(
itertools.takewhile(lambda c: bool(c),
itertools.imap(mfile.read,
itertools.repeat(1))), str.isspace)
return ("".join(group) for pred, group in byte_stream if not pred)
样本用法:
>>> import sys
>>> for w in readwords(sys.stdin):
... print (w)
...
I really love this new method of reading words in python
I
really
love
this
new
method
of
reading
words
in
python
It's soo very Functional!
It's
soo
very
Functional!
>>>
我想在你的情况下,这将是使用该功能的方式:
with open('words.txt', 'r') as f:
for word in readwords(f):
print(word)
答案 5 :(得分:0)
with open(filename) as file:
words = file.read().split()
它是文件中所有单词的列表。
import re
with open(filename) as file:
words = re.findall(r"([a-zA-Z\-]+)", file.read())