Question

我正在处理一个文本文件,例如:

blahblahblahblahblahblahblah
blahblahblahblahblahblahblah
start
important1a important1b
important2a important2b
end
blahblahblahblahblahblahblah

我想要的是得到一个输出像

[" important1a ,  important1b ", " important2a ,  important2b "]

每一条重要线被分成个别要素,但按行分列在一个清单中。

我已经接近这一点:

import shlex

useful = []
with open( test.txt ,  r ) as myfile:
    for line in myfile:
        if "start" in line:
            break
    for line in myfile:
        if "end" in line:
            break       
        useful.append(line)

data = "".join(useful)

split_data = shlex.split(data)
print split_data

这一产出:

[ important1a ,  important1b ,  important2a ,  important2b ]

界线之间没有区别。

我怎样才能修改这个来区分每一条线?

Answer 1

拯救行动的理解列表 :

[", ".join(map(repr, ln.split())) for ln in open("test.txt")
                                  if "important" in ln]

返回返回返回

[" important1a ,  important1b ", " important2a ,  important2b "]

Answer 2

您可以使用列表理解。您的代码看起来像 :

useful = []
with open( test.txt ,  r ) as myfile:
    for line in myfile:
        if "start" in line:
            break
    for line in myfile:
        line = line.strip()
        if "end" in line:
            break       
        useful.append(line)

print([" %s " %  , .join(elem.split(   )) for elem in useful])

Answer 3

不如这样吧:

useful = []
for line in open( test.txt ):
    parts = line.split()
    if parts[1:]:
        useful.append(" %s " % " ,  ".join(parts))

print useful

友情链接