用Python解析Erlang配置文件

Question

我想用python解析erlang配置文件。有沒有一個模塊？這個配置文件包含;

[{webmachine, [ 
{bind_address, "12.34.56.78"}, 
{port, 12345}, 
{document_root, "foo/bar"} 
]}]. 

Answer 1

未經測試，有點粗糙，但在你的例子「作品」

import re 
from ast import literal_eval 

input_string = """ 
[{webmachine, [ 
{bind_address, "12.34.56.78"}, 
{port, 12345}, 
{document_root, "foo/bar"} 
]}] 
""" 

# make string somewhat more compatible with Python syntax: 
compat = re.sub('([a-zA-Z].*?),', r'"\1":', input_string) 

# evaluate as literal, see what we get 
res = literal_eval(compat) 

[{'webmachine': [{'bind_address': '12.34.56.78'}, {'port': 12345}, 
{'document_root': 'foo/bar'}]}] 

然後你可以「捲起」字典的名單成一個簡單的dict，如：

dict(d.items()[0] for d in res[0]['webmachine']) 

{'bind_address': '12.34.56.78', 'port': 12345, 'document_root': 
'foo/bar'} 

Answer 2

你可以使用ETF庫在Python解析二郎方面https://github.com/machinezone/python_etf