Python Dos and Don'ts

• No need for threading.Event to signal boolean conditions between threads. Use threading.Event only if you need to efficiently block on the event to occur. Otherwise use a simple bool variable. The GIL takes care of the rest.

• Don't use format() or % to format log messages. The logger's debug(), info(), warn(), etc. methods are all variadic, and the extra arguments will be interpolated. IOW,

  logger.info('Hello, %s' % world)
  

  is equivalent to

  logger.info('Hello, %s', world)
  

  just less efficient, if the log level set above info.

• Don't waste pixels, use single-quoted strings by default.