import logging import logging.config import tempfile import yaml def main1(): logging.info("Don't show this") logging.basicConfig(level=logging.INFO) # b/c we have already logged this is ineffective logging.info("Don't show this") logging.error("Show this") def main2(): logging.basicConfig(level=logging.INFO) logging.info("Show this") logging.error("Show this") logging.debug("Don't show this") def main3(): with tempfile.NamedTemporaryFile() as tf: logging.basicConfig(filename=tf.name, level=logging.INFO) logging.info(f"using file ${tf.name}") logging.info("test") with open(tf.name) as f: print(f.readlines()) def main4(): logging.basicConfig(format="%(asctime)s %(levelname)s %(name)s - %(message)s", level=logging.INFO) logging.info("hello") def main5(): logger = logging.getLogger("main5") logging.basicConfig(format="%(asctime)s %(levelname)s %(name)s - %(message)s", level=logging.INFO) logger.info("hello") class ABC: def __init__(self): self.logger = logging.getLogger(self.__class__.__name__) logging.basicConfig(format="%(asctime)s %(levelname)s %(name)s - %(message)s", level=logging.INFO) # (****) def logf(self): self.logger.info("logf called") class BCD: def __init__(self): self.logger = logging.getLogger(self.__class__.__name__) logging.basicConfig(format="%(asctime)s %(levelname)s %(name)s - BBB %(message)s", level=logging.INFO) def logf(self): self.logger.info("logf called") def main6(): abc = ABC() abc.logf() bcd = BCD() bcd.logf() # Note: still uses the basicConfig from the ABC call # rerunning with line (****) commented out, shows no log for abc.logf, but does show the log for bcd.logf and # uses the form of logging from BCD def main7(): bcd = BCD() abc = ABC() abc.logf() bcd.logf() def main8(): with open("logging_1.yaml") as log_conf_file: log_conf = yaml.load(log_conf_file) logging.config.dictConfig(log_conf) loga = logging.getLogger("loga") loga.info("yoyoyo") logb = logging.getLogger("logb") logb.info("tralalal") def f(x, log=logging.getLogger("f_logger")): log.info(f"f called with {x}") def main9(log_conf_filename="logging_1.yaml"): with open(log_conf_filename) as log_conf_file: log_conf = yaml.load(log_conf_file) logging.config.dictConfig(log_conf) loga = logging.getLogger("loga") loga.info("yoyoyo") f(2) f(3, loga) def ff(x): logging.basicConfig(level=logging.DEBUG) logging.debug("hi", stack_info=True) return x def main10(): ff(3) def main11(): la = logging.getLogger("loggera") la.setLevel(logging.WARN) la.info("hi") la.setLevel(logging.INFO) la.info("hi") if __name__ == '__main__': #main9("logging_2.yaml") #main10() main11() print("hi")