Question

我有长串（28MB）的普通句子。我想删除所有大写字母的单词（如TNT，USA，OMG）。

所以从发送：

Jump over TNT in There.

我想得到：

Jump over  in There.

有没有办法，如何在不将文本拆分成列表并迭代的情况下执行此操作？是否有可能以某种方式使用正则表达式？

Answer 1

您可以使用以字边界[A-Z]捕获的大写字母\b：

import re

line = 'Jump over TNT in There NOW'

m = re.sub(r'\b[A-Z]+\b', '', line)
#'Jump over  in There '

Answer 2

使用模块re，

import re

line = 'Jump over TNT in There.'
new_line = re.sub(r'[A-Z]+(?![a-z])', '', line)

print(new_line)
# Output
Jump over  in There.

Answer 3

我会做这样的事情：

import string

def onlyUpper(word):
    for c in word:
        if not c.isupper():
            return False
    return True

s = "Jump over TNT in There."
for char in string.punctuation:
    s = s.replace(char, ' ')

words = s.split()
good_words = []

for w in words:
    if not onlyUpper(w):
        good_words.append(w)

result = ""
for w in good_words:
    result = result + w + " "

print result

Python - 从长字符串中删除大写单词

3 个答案: