python - 使用Python将列表写入文件(Writing a list to a file with Python)

Question

Is this the cleanest way to write a list to a file, since writelines() doesn't insert newline characters?

(这是将列表写入文件的最干净的方法，因为writelines()不会插入换行符吗？)

file.writelines(["%s
" % item  for item in list])

It seems like there would be a standard way...

(似乎会有一种标准的方法...)

  ask by Josh Arenberg translate from so

Answer 1

You can use a loop:

(您可以使用循环：)

with open('your_file.txt', 'w') as f:
    for item in my_list:
        f.write("%s
" % item)

In Python 2, you can also use

(在Python 2中，您也可以使用)

with open('your_file.txt', 'w') as f:
    for item in my_list:
        print >> f, item

If you're keen on a single function call, at least remove the square brackets [] , so that the strings to be printed get made one at a time (a genexp rather than a listcomp) -- no reason to take up all the memory required to materialize the whole list of strings.

(如果您热衷于单个函数调用，请至少删除方括号[] ，以便一次打印一个字符串（一个genexp而不是一个listcomp）-没有理由占用所有实现整个字符串列表所需的内存。)