創(chuàng)建日志類并使用

如何使用python自帶的 logging 模塊實(shí)現(xiàn)日志功能

1.初始化一個(gè)logger對(duì)象

1）引入模塊

import os
import logging
import sys

2）初始化變量，聲明logger對(duì)象

LOG_PATH = 'logs' ? #設(shè)置log路徑
LOG_FILE = 'text.txt' ? ?#設(shè)置log文件名
#設(shè)置根路徑為起始位置
logger = logging.getLogger(__name__)

3）生成路徑

#生成log指定路徑
if os.path.exists(LOG_PATH):
? ? pass
else:
? ? os.mkdir(LOG_PATH)

4）指定logger輸出格式

? ? formatter = logging.Formatter('%(asctime)s %(levelname)-8s: %(message)s')
? ? file_handler = logging.FileHandler("%s/%s" % (LOG_PATH, LOG_FILE))
? ? # 可以通過setFormatter指定輸出格式
? ? file_handler.setFormatter(formatter)
? ? logger.addHandler(file_handler)

5）指定日志文件的輸出級(jí)別

分為如下幾個(gè)級(jí)別：

_nameToLevel = {
? ? 'CRITICAL': CRITICAL,
? ? 'FATAL': FATAL,
? ? 'ERROR': ERROR,
? ? 'WARN': WARNING,
? ? 'WARNING': WARNING,
? ? 'INFO': INFO,
? ? 'DEBUG': DEBUG,
? ? 'NOTSET': NOTSET,
}?

使用setLevel函數(shù)指定輸出級(jí)別 指定之后將只顯示級(jí)別以上的日志類型

logger.setLevel(logging.DEBUG)

2.輸入日志內(nèi)容

#輸出debug類型日志
logger.debug("debug")
#多參數(shù)傳遞 ?輸入info類型日志
pam= "dshck"
pam2="cxjkdhc"
logger.info("%s%s"%(pam,pam2))

log.py 代碼如下

import os
import logging
from logging.handlers import TimedRotatingFileHandler
import datetime
import json
LOG_PATH = "log"
LOG_INFO = '_info.log'
LOG_ERROR = '_error.log'
class logger:
? ? def __init__(self,prefix_name = "flask"):
? ? ? ? if os.path.exists(LOG_PATH):
? ? ? ? ? ? pass
? ? ? ? else:
? ? ? ? ? ? os.mkdir(LOG_PATH)
? ? ? ? self.prefix = prefix_name
? ? ? ? self.info_logger = logging.getLogger("info")
? ? ? ? self.error_logger = logging.getLogger("error")
? ? ? ? self.format = logging.Formatter('[%(asctime)s][%(threadName)s:%(thread)d][task_id:%(name)s]\
[%(filename)s:%(lineno)d]' '[%(levelname)s] : %(message)s')
? ? ? ? #指定文件位置文件名以及輸出格式
? ? ? ? info_file_handler = logging.FileHandler("%s/%s%s" % (LOG_PATH, prefix_name,LOG_INFO))
? ? ? ? info_file_handler.setFormatter(self.format)
? ? ? ? error_file_handler = logging.FileHandler("%s/%s%s" % (LOG_PATH, prefix_name,LOG_ERROR))
? ? ? ? error_file_handler.setFormatter(self.format)
? ? ? ? self.info_logger.addHandler(info_file_handler)
? ? ? ? self.error_logger.addHandler(error_file_handler)
? ? ? ? # 指定日志的最低輸出級(jí)別
? ? ? ? self.info_logger.setLevel(logging.NOTSET)
? ? ? ? self.error_logger.setLevel(logging.ERROR)
? ? def debug(self, msg, *args, **kwargs):
? ? ? ? self.info_logger.debug(msg, *args, **kwargs)
? ? def info(self, msg, *args, **kwargs):
? ? ? ? self.info_logger.info(msg, *args, **kwargs)
? ? def warn(self, msg, *args, **kwargs):
? ? ? ? self.info_logger.warning(msg, *args, **kwargs)
? ? def warning(self, msg, *args, **kwargs):
? ? ? ? self.info_logger.warning(msg, *args, **kwargs)
? ? def error(self, msg, *args, **kwargs):
? ? ? ? self.error_logger.error(msg, *args, **kwargs)
? ? def fatal(self, msg, *args, **kwargs):
? ? ? ? self.error_logger.fatal(msg, *args, **kwargs)
? ? def critical(self, msg, *args, **kwargs):
? ? ? ? self.error_logger.critical(msg, *args, **kwargs)
# log =logger()
# log.info("jdshskh")
# log.error("hdskck")
# log.debug("1122debug")
# log.warn("warn")
# log.warning("warning")
# log.critical("critical")
# log.fatal("fatal")
log =logger("celery")
log.info("jdshskh")
log.error("hdskck")
log.debug("1122debug")
log.warn("warn")
log.warning("warning")
log.critical("critical")
log.fatal("fatal")

python3 import logging報(bào)錯(cuò)：RecursionError: maximum recursion depth exceeded while calling a Python

python3不用import logging，因?yàn)閘ogging已經(jīng)內(nèi)置了。

參考：https://stackoverflow.com/questions/32386469/logging-module-not-working-with-python3

報(bào)錯(cuò)：RecursionError: maximum recursion depth exceeded while calling a Python object

# python3 運(yùn)行 import logging報(bào)錯(cuò)

Traceback (most recent call last):
  File "/home/xxx/folder1/utee/misc.py", line 32, in info
    self.init('/tmp', 'tmp.log')
  File "/home/xxx/folder1/utee/misc.py", line 22, in init
    print(log_file)
  File "/home/xxx/folder1/utee/misc.py", line 32, in info
    self.init('/tmp', 'tmp.log')
 
...
  
  File "/home/xxx/folder1/utee/misc.py", line 32, in info
    self.init('/tmp', 'tmp.log')
  File "/home/xxx/folder1/utee/misc.py", line 17, in init
    import logging
RecursionError: maximum recursion depth exceeded while calling a Python object

python3 pip3 安裝 logging報(bào)錯(cuò)：

url: /simple/logging/ (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)'),)) 

$ sudo -H pip3 --proxy=xx.xxx.xx.xxx:8080 install logging

# 報(bào)錯(cuò)內(nèi)容：SSL報(bào)錯(cuò)。

Collecting logging
  WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)'),)': /simple/logging/
  WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)'),)': /simple/logging/
  WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)'),)': /simple/logging/
  WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)'),)': /simple/logging/
  WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)'),)': /simple/logging/
  Could not fetch URL https://pypi.org/simple/logging/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/logging/ (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)'),)) - skipping
  ERROR: Could not find a version that satisfies the requirement logging (from versions: none)
ERROR: No matching distribution found for logging

# 解決：設(shè)置可信的域名。 （--trusted-host pypi.org --trusted-host files.pythonhosted.org）

$ sudo -H pip3 --proxy=xx.xxx.xx.xxx:8080 --trusted-host pypi.org --trusted-host files.pythonhosted.org install logging

還是報(bào)錯(cuò)：  raise NotImplementedError, 'emit must be implemented '\

# 報(bào)錯(cuò)內(nèi)容 

Collecting logging
  Downloading https://files.pythonhosted.org/packages/93/4b/979db9e44be09f71e85c9c8cfc42f258adfb7d93ce01deed2788b2948919/logging-0.4.9.6.tar.gz (96kB)
     |????????????????????????????????????????????????????????????????| 102kB 529kB/s
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-u8g87k38/logging/setup.py'"'"'; __file__='"'"'/tmp/pip-install-u8g87k38/logging/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base pip-egg-info
         cwd: /tmp/pip-install-u8g87k38/logging/
    Complete output (44 lines):
    running egg_info
    creating pip-egg-info/logging.egg-info
    writing pip-egg-info/logging.egg-info/PKG-INFO
    writing dependency_links to pip-egg-info/logging.egg-info/dependency_links.txt
    writing top-level names to pip-egg-info/logging.egg-info/top_level.txt
    writing manifest file 'pip-egg-info/logging.egg-info/SOURCES.txt'
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-u8g87k38/logging/setup.py", line 13, in <module>
        packages = ["logging"],
      File "/usr/lib/python3.5/distutils/core.py", line 148, in setup
        dist.run_commands()
      File "/usr/lib/python3.5/distutils/dist.py", line 955, in run_commands
        self.run_command(cmd)
      File "/usr/lib/python3.5/distutils/dist.py", line 974, in run_command
        cmd_obj.run()
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/setuptools/command/egg_info.py", line 186, in run
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/setuptools/command/egg_info.py", line 209, in find_sources
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/setuptools/command/egg_info.py", line 293, in run
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/setuptools/command/egg_info.py", line 322, in add_defaults
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/setuptools/command/sdist.py", line 120, in add_defaults
      File "/usr/lib/python3.5/distutils/cmd.py", line 298, in get_finalized_command
        cmd_obj = self.distribution.get_command_obj(command, create)
      File "/usr/lib/python3.5/distutils/dist.py", line 846, in get_command_obj
        klass = self.get_command_class(command)
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/setuptools/dist.py", line 430, in get_command_class
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/pkg_resources/__init__.py", line 2370, in load
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/pkg_resources/__init__.py", line 2376, in resolve
      File "<frozen importlib._bootstrap>", line 969, in _find_and_load
      File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
      File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/setuptools/command/build_py.py", line 15, in <module>
      File "<frozen importlib._bootstrap>", line 969, in _find_and_load
      File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
      File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
      File "/usr/local/lib/python3.5/dist-packages/setuptools-19.6-py3.5.egg/setuptools/lib2to3_ex.py", line 12, in <module>
      File "/usr/lib/python3.5/lib2to3/refactor.py", line 19, in <module>
        import logging
      File "/tmp/pip-install-u8g87k38/logging/logging/__init__.py", line 618
        raise NotImplementedError, 'emit must be implemented '\
                                 ^
    SyntaxError: invalid syntax
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

總結(jié)

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