logging.config.fileConfig : SyntaxError: (unicode error)

Question

当我运行以下Python3代码在CMD或Powershell :

# -*- coding: utf-8 -*-

import time

logging.config.fileConfig('log_config.ini',
                          defaults={'logfilename': time.strftime(str(__file__.split(".")[0].split("/")[-1]) + "_%Y%m%d-%H%M%S.log", time.localtime())})

我收到以下错误：

Traceback (most recent call last):
  File "C:\Users\test.py", line 6, in <module>
    defaults={'logfilename': time.strftime(str(__file__.split(".")[0].split("/")[-1]) + "_%Y%m%d-%H%M%S.log", time.localtime())})
  File "C:\Python37-32\lib\logging\config.py", line 79, in fileConfig
    handlers = _install_handlers(cp, formatters)
  File "C:\Python37-32\lib\logging\config.py", line 142, in _install_handlers
    args = eval(args, vars(logging))
  File "<string>", line 1
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 16-17: truncated \UXXXXXXXX escape

但是，我 PyCharm 没有遇到这个问题。

这是我的日志配置文件：

# Configuration
[logger_root]
level = DEBUG
handlers = consoleHandler, fileHandler

# ========================================= DECLARATIONS
[loggers]
keys = root

[handlers]
keys = consoleHandler,fileHandler

[formatters]
keys = simpleFormatter

# ========================================= DEFINITION DES HANDLERS

# Le handler par défaut écrit dans la console...
[handler_consoleHandler]
class = StreamHandler
level = DEBUG
formatter = simpleFormatter
args = (sys.stdout,)

# ...et un handler plus axé production qui écrit dans un fichier
[handler_fileHandler]
class = handlers.TimedRotatingFileHandler
level = INFO
formatter = simpleFormatter
args = ('logs/%(logfilename)s', 'D', 1, 30)

# ========================================= DEFINITION DES FORMATTERS

# Le formatter utilisé de façon standard
[formatter_simpleFormatter]
format = [%(asctime)s] - [%(levelname)s] - [%(name)s] - [%(filename)s:%(lineno)s] - %(message)s

如果有人遇到同样的问题有解决方法。

Answer 1

在PyCharm中，__file__ returns一个带“/”的字符串。

在 CMD 和 powershell 中，__file__ returns 带有“\”的字符串。

我们只需在 __file__ 之后添加 .replace("\", "/") :

# -*- coding: utf-8 -*-

import time

logging.config.fileConfig('log_config.ini',
                          defaults={'logfilename': time.strftime(str(__file__.replace("\", "/").split(".")[0].split("/")[-1]) + "_%Y%m%d-%H%M%S.log", time.localtime())})

logging.config.fileConfig : SyntaxError: (unicode error)

logging.config.fileConfig : SyntaxError: (unicode error)

unicode

logging

config

syntax-error

python-3.7