在 Python 中生成随机文件名的最佳方法 [英] Best way to generate random file names in Python

问题描述

在 Python 中，生成一些随机文本以添加到我保存到服务器的文件(名称)的好方法或最佳方法是什么，只是为了确保它不会覆盖.谢谢！

In Python, what is a good, or the best way to generate some random text to prepend to a file(name) that I'm saving to a server, just to make sure it does not overwrite. Thank you!

推荐答案

Python 具有生成临时文件名的功能，请参阅 http://docs.python.org/library/tempfile.html.例如:

Python has facilities to generate temporary file names, see http://docs.python.org/library/tempfile.html. For instance:

In [4]: import tempfile

每次调用 tempfile.NamedTemporaryFile() 都会产生一个不同的临时文件，其名称可以通过 .name 属性访问，例如:

Each call to tempfile.NamedTemporaryFile() results in a different temp file, and its name can be accessed with the .name attribute, e.g.:

In [5]: tf = tempfile.NamedTemporaryFile()
In [6]: tf.name
Out[6]: 'c:\blabla\locals~1\temp\tmptecp3i'

In [7]: tf = tempfile.NamedTemporaryFile()
In [8]: tf.name
Out[8]: 'c:\blabla\locals~1\temp\tmpr8vvme'

一旦您拥有唯一的文件名，就可以像使用任何常规文件一样使用它.注意:默认情况下，文件将被删除关闭.但是，如果 delete 参数为 False，则文件不是自动删除.

Once you have the unique filename it can be used like any regular file. Note: By default the file will be deleted when it is closed. However, if the delete parameter is False, the file is not automatically deleted.

完整参数集:

tempfile.NamedTemporaryFile([mode='w+b'[, bufsize=-1[, suffix=''[, prefix='tmp'[, dir=None[, delete=True]]]]]])

还可以为临时文件指定前缀(作为可以在文件创建期间提供的各种参数之一):

it is also possible to specify the prefix for the temporary file (as one of the various parameters that can be supplied during the file creation):

In [9]: tf = tempfile.NamedTemporaryFile(prefix="zz")
In [10]: tf.name
Out[10]: 'c:\blabla\locals~1\temp\zzrc3pzk'

可以在此处

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