python删除有空白单元格的行,python 删除列表中的空元素

在.srt文件上调用readlines()时,我得到了一个包含大量前导空格和尾随空格的字符列表,如下所示

with open(infile) as f:

r=f.readlines()

return r

我得到了这份清单

['xefxbbxbf1rn', '00:00:00,000 --> 00:00:03,000rn', "[D. Evans] Now that you've written your first Python program,rn",'rn', '2rn', '00:00:03,000 --> 00:00:06,000rn', 'you might be wondering why we need to invent new languages like Pythonrn', 'rn']

为简洁起见,我只包含了一些元素.如何清理此列表,以便删除所有空白字符并仅获取相关元素

['1','00:00:00,000 --> 00:00:03,000',"[D. Evans] Now that you've written your first Python program"...]