How to display thread id in python logs

You can automatically add thread ids to your log statements using Python's logging module with LogRecord. LogRecord provides 2 attributes for thread related information: threadName and thread.

%(thread)d : Thread ID (if available).
%(threadName)s : Thread name (if available).

For printing thread name:

from logging import getLogger, getLevelName, Formatter, StreamHandler

log = getLogger()
log.setLevel(getLevelName('INFO'))
log_formatter = Formatter("%(asctime)s [%(levelname)s] %(name)s: %(message)s [%(threadName)s] ") # I am printing thread id here

console_handler = StreamHandler()
console_handler.setFormatter(log_formatter)
log.addHandler(console_handler)

log.info("Hi, how are you")

Sample output from above:

2014-10-19 18:18:29,644 [INFO] root: Hi, how are you [MainThread]

For printing thread id:

from logging import getLogger, getLevelName, Formatter, StreamHandler

log = getLogger()
log.setLevel(getLevelName('INFO'))
log_formatter = Formatter("%(asctime)s [%(levelname)s] %(name)s: %(message)s [%(threadName)s] ") # I am printing thread id here

console_handler = StreamHandler()
console_handler.setFormatter(log_formatter)
log.addHandler(console_handler)

log.info("Hi, how are you")

Sample output from above:

2014-10-19 18:22:02,294 [INFO] root: Hi, how are you [140635865786176]