Python 在 Raspberry 中记录文件错误

Question

我在我的 Raspberry Pi 中使用 Python3，我有一个代码，有人与我分享，显示以下行来记录日志文件：

logging.basicConfig(filename='/Desktop/var/log/morning/RER-execution-logs.txt',format='%(levelname)s:%(asctime)s:%(message)s', level=logging.INFO)

但是当我在我的 Raspberry 上使用 Python 托盘运行代码时，我收到以下错误：

Traceback (most recent call last):
File "test.py", line 709, in <module>
main(sys.argv)
File "test.py", line 641, in main
logging.basicConfig(filename='/var/log/morning/RER-execution-logs.txt',format='%(levelname)s:%(asctime)s:%(message)s', level=logging.INFO)
File "/usr/lib/python3.7/logging/__init__.py", line 1900, in basicConfig
h = FileHandler(filename, mode)
File "/usr/lib/python3.7/logging/__init__.py", line 1092, in __init__
StreamHandler.__init__(self, self._open())
File "/usr/lib/python3.7/logging/__init__.py", line 1121, in _open
return open(self.baseFilename, self.mode, encoding=self.encoding)
FileNotFoundError: [Errno 2] No such file or directory: '/var/log/morning/RER-execution-logs.txt'

我也手动创建了目录和文件，但我得到了另一个错误：

Traceback (most recent call last):
File "test.py", line 709, in <module>
main(sys.argv)
File "test.py", line 641, in main
logging.basicConfig(filename='/var/log/morning/RER-execution-logs.txt',format='%(levelname)s:%(asctime)s:%(message)s', level=logging.INFO)
File "/usr/lib/python3.7/logging/__init__.py", line 1900, in basicConfig
h = FileHandler(filename, mode)
File "/usr/lib/python3.7/logging/__init__.py", line 1092, in __init__
StreamHandler.__init__(self, self._open())
File "/usr/lib/python3.7/logging/__init__.py", line 1121, in _open
return open(self.baseFilename, self.mode, encoding=self.encoding)
PermissionError: [Errno 13] Permission denied: '/var/log/morning/RER-execution-logs.txt

我做错了什么

Answer 1

这只是因为您尝试登录的文件并不实际存在。您可以手动创建它，也可以使用以下版本的 Python 脚本为您创建它，如果它还不存在的话：

import logging, os

logPath = '/Desktop/var/log/morning/RER-execution-logs.txt'

if not os.path.exists(logPath):
    open(logPath, 'w+').close()

logging.basicConfig(filename=logPath,format='%(levelname)s:%(asctime)s:%(message)s', level=logging.INFO)

但是请确保该日志文件的路径实际上是正确的。为了更加确定，请使用绝对路径。您正在寻找类似的东西：

/home/pi/Destkop/...

Python 在 Raspberry 中记录文件错误

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