Question

我试图通过使用subproccess.popen调用从一个程序（program1）运行代码。程序2（被调用的程序）不显示记录器语句。在下面的示例代码中，program1调用program2并为每个代码设置日志记录。

program1.py

import subprocess
import logging
import sys

def configure_logging(name):
    logger = logging.getLogger(name)
    logger.setLevel(logging.DEBUG)
    formatter = logging.Formatter("%(asctime)s:%(name)s:%(message)s")
    stream_handler = logging.StreamHandler()
    stream_handler.setFormatter(formatter)
    logger.addHandler(stream_handler)
    return logger

logger = configure_logging(__name__) 
python_path = "Path/to/specific/pythonexe"
py_path = "Path/to/program2.py"    
cmd = "{} {}".format(python_path,py_path) 
logger.info("Cmd: {}".format(cmd)) 
cmd = cmd.split()        
proc = subprocess.Popen(cmd,stdout=subprocess.PIPE,stderr=subprocess.PIPE,universal_newlines=True)

program2.py

import logging
def logstuff(name):
    logger = logging.getLogger(name)
    logger.setLevel(logging.DEBUG)
    formatter = logging.Formatter("%(asctime)s:%(name)s:%(message)s")
    stream_handler = logging.StreamHandler()
    stream_handler.setFormatter(formatter)
    logger.addHandler(stream_handler)
    return logger

def main():
    logger.info("hi")
    print("hi2")

if __name__ == "__main__": 
    logger = logstuff(__name__)
    main()

使用上面的安装程序1会调用program2，但是logger.info语句不会被打印出来，只有print（）语句会被打印出来。

我无法导入program2，因为它依赖于Anaconda环境中封装的特定python版本。

我期望的输出是将logger.info和随后的所有logger记录打印到终端，那么我将如何实现这一目标？

Answer 1

我相信您搞乱了记录器的设置。还有stdout PIPE的subprocess.Popen对我来说不起作用。这就是我在本地工作的成果，希望对您有所帮助。

program1.py

import logging
import subprocess

logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
formatter = logging.Formatter('%(asctime)s:%(name)s:%(message)s')
stream_handler = logging.StreamHandler()
stream_handler.setFormatter(formatter)
logger.addHandler(stream_handler)

python_path = 'python'
py_path = 'program2.py'
cmd = '{} {}'.format(python_path, py_path)
logger.info('Cmd: {}'.format(cmd))
cmd = cmd.split()
subprocess.call(cmd)

program2.py

import logging
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
formatter = logging.Formatter('%(asctime)s:%(name)s:%(message)s')
stream_handler = logging.StreamHandler()
stream_handler.setFormatter(formatter)
logger.addHandler(stream_handler)


def main():
    logger.info('hi program2 here')

if __name__ == '__main__':
    main()

输出：

$ python program1.py 
2018-11-14 15:38:53,905:__main__:Cmd: python program2.py
2018-11-14 15:38:53,917:__main__:hi program2 here

Python记录器无法与子过程一起使用

1 个答案: