将python输出为python可读格式

Question

We're using a python based application which reads a configuration file containing a couple of arrays:

Example layout of config file:

array1 = [
'bob',
'sue',
'jayne'
]

Currently changes to the configuration are done by hand, but I've written a little interface to streamline the process (mainly to avoid errors).

It currently reads in the existing configuration, using a simple "import". However what I'm not sure how to do, is get my script to write it's output in valid python, so that the main application can read it again.

How can I can dump the array back into the file, but in valid python?

Cheers!

Answer 1

I'd suggest JSON or YAML (Less verbose than JSON) for configuration files. That way, the configuration file becomes more readable for the less pythonate ;) It's also easier to throw adequate errors, eg if the configuration is incomplete.

To save python objects you can always use pickle .

Answer 2

Generally using repr() will create a string that can be re-avaluated. But pprint does a little nicer output.

from pprint import pprint

outf.write("array1 = "); pprint(array1, outf)

Answer 3

repr(array1) （并将其写入文件）将是一个非常简单的解决方案，但它应该在这里工作。