Preserve case in ConfigParser?

Question

I have tried to use Python's ConfigParser module to save settings. For my app it's important that I preserve the case of each name in my sections. The docs mention that passing str() to ConfigParser.optionxform() would accomplish this, but it doesn't work for me. The names are all lowercase. Am I missing something?

<~/.myrc contents>
[rules]
Monkey = foo
Ferret = baz

Python pseudocode of what I get:

import ConfigParser,os

def get_config():
   config = ConfigParser.ConfigParser()
   config.optionxform(str())
    try:
        config.read(os.path.expanduser('~/.myrc'))
        return config
    except Exception, e:
        log.error(e)

c = get_config()  
print c.options('rules')
[('monkey', 'foo'), ('ferret', 'baz')]

Answer 1

The documentation is confusing. What they mean is this:

import ConfigParser, os
def get_config():
    config = ConfigParser.ConfigParser()
    config.optionxform=str
    try:
        config.read(os.path.expanduser('~/.myrc'))
        return config
    except Exception, e:
        log.error(e)

c = get_config()  
print c.options('rules')

I.e. override optionxform, instead of calling it; overriding can be done in a subclass or in the instance. When overriding, set it to a function (rather than the result of calling a function).

I have now reported this as a bug, and it has since been fixed.