Question

我想从txt文件副本中的字符串列表中删除空元素。以前我按元素划分并将字符串a引导到小写字母。关注点是从列表中删除空元素，代码不起作用。我试着编写一个函数，代码如下：

with open('text_file.txt','r') as rf:
    with open('text_file_copy.txt','w') as wf:
        for line in rf:
            line=line.lower() # lower case
            line=re.split(r'\s*', line) *# split elements by spaces*
            line=str(line)
            wf.write(line) *# writing to a file copy*
            line=wf.write(line)
            def empty_delete(line):
                new_line = []
                for word in line:
                    if word != '':
                        new_line.append(word)
                        return new_line
                    line=str(new_line)
                    wf.write(new_line) *# writing new list to a copy*

该文本仍有一些空元素： [＆＃39; in＆＃39;，＆＃39; compare＆＃39;，＆＃39; to＆＃39;，＆＃39; dogs，＆＃39;，＆＃39; cats＆＃39;，＆＃ 39;＆＃39;＆＃39; not＆＃39;，＆＃39;经历＆＃39;，＆＃39; major＆＃39;，＆＃39;更改＆＃39;＆＃39;在＆＃39; ，＆＃39;＆＃39;，＆＃39;驯化＆＃39;＆＃39;流程。＆＃39;，＆＃39;＆＃39;] [＆＃39; in＆＃39;，＆＃39;比较＆＃39;，＆＃39;，＆＃39;狗，＆＃39;，＆＃39;猫＆＃39;，＆＃39;有＆＃39;，＆＃39; ;＆＃39;，＆＃39;经历＆＃39;，＆＃39;主要＆＃39;，＆＃39;更改＆＃39;，＆＃39;＆＃39;＆＃39;＆＃39;＆＃39; ，＆＃39;归化＆＃39;，＆＃39;流程。＆＃39;，＆＃39;＆＃39;]

Answer 1

以下是如何从可迭代（例如打开的文件）中删除空行和空行：

for line in ...:
   if not line or line.isspace():
     continue # Ignore this line
   # Do something usefule with the line.

如何从txt文件中删除空元素

1 个答案: