如何从 .t​​xt 文件的每一行中删除破折号/连字符

Question

我编写了一个小程序，将书本扫描的页面转换为 .txt 文件。在某些行上，单词被移到另一行。我想知道这是否可以删除破折号并将它们与下面一行中的音节合并？

例如：

effects on the skin is fully under-
stood one fights

到：

 effects on the skin is fully understood
 one fights

或：

effects on the skin is fully 
understood one fights

或者类似的东西。只要是连接的。 Python是我的第三种语言，到目前为止我什么都想不出来，所以也许有人会给我提示。

编辑： 关键是最后一个符号，如果是破折号，将被删除并与下面的其余单词合并

Answer 1

这是一个逐行获取输入的生成器。如果它以- 结尾，它会提取最后一个单词并将其保留到下一行。然后它会从前一行与当前行结合产生任何保留的单词。

要将结果组合回单个文本块，您可以 join 它与您选择的行分隔符：

source = """effects on the skin is fully under-
stood one fights
check-out Daft Punk's new sin-
le "Get Lucky" if you hav-
e the chance. Sound of the sum-
mer."""

def reflow(text):
    holdover = ""
    for line in text.splitlines():
        if line.endswith("-"):
            lin, _, e = line.rpartition(" ")
        else:
            lin, e = line, ""
        yield f"{holdover}{lin}"
        holdover = e[:-1]

print("\n".join(reflow(source)))
""" which is:
effects on the skin is fully
understood one fights
check-out Daft Punk's new
single "Get Lucky" if you
have the chance. Sound of the
summer.
"""

逐行读取一个文件并直接写入一个新文件：

def reflow(infile, outfile):
    with open(infile) as source, open(outfile, "w") as dest:
        holdover = ""
        for line in source.readlines():
            line = line.rstrip("\n")
            if line.endswith("-"):
                lin, _, e = line.rpartition(" ")
            else:
                lin, e = line, ""
            dest.write(f"{holdover}{lin}\n")
            holdover = e[:-1]

if __name__ == "__main__":
    reflow("source.txt", "dest.txt")

Answer 2

这是一种方法

with open('test.txt') as file:
    combined_strings = []
    merge_line = False
    for item in file:
        item = item.replace('\n', '') # remove new line character at end of line
        if '-' in item[-1]:  # check that it is the last character
            merge_line = True
            combined_strings.append(item[:-1])
        elif merge_line:
            merge_line = False
            combined_strings[-1] = combined_strings[-1] + item
        else:
            combined_strings.append(item)

Answer 3

如果您只是将行解析为字符串，那么您可以利用 .split() 函数来移动这些类型的项目

words = "effects on the skin is fully under-\nstood one fights"
#splitting among the newlines
wordsSplit = words.split("\n")
#splitting among the word spaces
for i in range(len(wordsSplit)):
    wordsSplit[i] = wordsSplit[i].split(" ")
#checking for the end of line hyphens
for i in range(len(wordsSplit)):
    for g in range(len(wordsSplit[i])):
        if "-" in wordsSplit[i][g]:
            #setting the new word in the list and removing the hyphen
            wordsSplit[i][g] = wordsSplit[i][g][0:-1]+wordsSplit[i+1][0]
            wordsSplit[i+1][0] = ""
#recreating the string
msg = ""
for i in range(len(wordsSplit)):
    for g in range(len(wordsSplit[i])):
        if wordsSplit[i][g] != "":
            msg += wordsSplit[i][g]+" "

它的作用是由通常出现连字符的换行符分开。然后它按单词将它们拆分成一个较小的数组。然后检查连字符，如果找到，则将其替换为单词列表中的下一个短语，并将该单词设置为空。最后，它将字符串重构为一个名为 msg 的变量，如果拆分数组中的值是空字符串，它不会添加空格。

Answer 4

怎么样

import re

a = '''effects on the skin is fully under-
stood one fights'''

re.sub(r'-~([a-zA-Z0-9]*) ', r'\1\n', a.replace('\n', '~')).replace('~','\n')

说明

a.replace('\n', '~') 使用 (~ 而不是 \n - 如果要在文本中使用 ~ 字符，则需要选择其他字符串。)

-~([a-zA-Z0-9]*) 正则表达式然后选择我们要使用 () 反向引用更改的所有字符串，将其保存到 re.sub 内存。使用 '\1\n' 稍后会重新调用它。

.replace('~','\n') 最终将所有剩余的~ 字符替换为换行符。