title: ConfigParser reads capital keys and make them lower case
body: <p>I found one interesting observation.
  I had written one config file read program as,</p>
  
  <pre><code>import ConfigParser
  class  ConfReader(object):
      ConfMap = dict()
  
      def __init__(self):
          self.config = ConfigParser.ConfigParser()
          self.config.read('./Config.ini')
          self.__loadConfigMap()
  
      def __loadConfigMap(self):
          for sec in self.config.sections():
              for key,value in self.config.items(sec):
                  print 'key = ', key, 'Value = ', value
                  keyDict = str(sec) + '_' + str(key)
                  print 'keyDict = ' + keyDict  
                  self.ConfMap[keyDict] = value
  
      def getValue(self, key):
          value = ''
          try:
              print ' Key = ', key
              value = self.ConfMap[key] 
          except KeyError as KE:
              print 'Key', KE , ' didn\'t found in configuration.'
      return value
  
  class MyConfReader(object):
      objConfReader = ConfReader()
  
  def main():
       print MyConfReader().objConfReader.getValue('DB2.poolsize')
       print MyConfReader().objConfReader.getValue('DB_NAME')
  
  if __name__=='__main__':
      main()
  </code></pre>
  
  <p>And my Config.ini file looks like,</p>
  
  <pre><code>[DB]
  HOST_NAME=localhost
  NAME=temp
  USER_NAME=postgres
  PASSWORD=mandy
  </code></pre>
  
  <p>The  __loadConfigMap() works just fine. But while reading the key and values, it is making the keys lower case. I didn't understand the reason. Can any one please explain why it is so?</p>