debugDay2017-05-09

今天在动车上完成了一次debug，内心其实害怕解不开。还是解开了。

写给6个月之前的许从用：

亲爱的自己，其实bug没那么可怕，只是内心的一个害怕计算机本身并没有排挤我们，他在很实在的告诉我们错误在哪里。让我们读懂他给我们的文字。尊重计算机告诉我们的错误地方。就可以解开这个bug。

计算机本质上还是在做01处理和数据库交互，从本质看问题。
告诉小黄鸭错在哪里，一句一句的翻译。慢其实不一定是坏事。

Unhandled exception in thread started by 
没有把手，例外在线开始于
<function check_errors.<locals>.wrapper at 0x103c99d08>
方法排查错误<本地>包装在0x103c99d08
Traceback (most recent call last):
返回值：很多不久之前的错误
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/logging/config.py", line 558, in configure
    handler = self.configure_handler(handlers[name])
文件 configure 
驯兽师 = 配置驯兽师
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/logging/config.py", line 731, in configure_handler
    result = factory(**kwargs)
文件 config.py 在配置驯兽师
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/logging/handlers.py", line 150, in __init__
    文件：150，在__init__
    BaseRotatingHandler.__init__(self, filename, mode, encoding, delay)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/logging/handlers.py", line 57, in __init__
    logging.FileHandler.__init__(self, filename, mode, encoding, delay)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/logging/__init__.py", line 1025, in __init__
    StreamHandler.__init__(self, self._open())
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/logging/__init__.py", line 1054, in _open
    返回 打開文件
    return open(self.baseFilename, self.mode, encoding=self.encoding)
FileNotFoundError: [Errno 2] No such file or directory: '/sourceDns/log/all.log'
文件沒有打開，沒有找到目錄：'/sourceDns/log/all.log
During handling of the above exception, another exception occurred:
在什麼期間沒有配置在上面，可能包括，再一的發生
Traceback (most recent call last):
痕跡（沒有反悔）

  File "/Users/VANXV/.virtualenvs/zss322/lib/python3.6/site-packages/django/utils/autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "/Users/VANXV/.virtualenvs/zss322/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 113, in inner_run
    autoreload.raise_last_exception()
  File "/Users/VANXV/.virtualenvs/zss322/lib/python3.6/site-packages/django/utils/autoreload.py", line 249, in raise_last_exception
    six.reraise(*_exception)
  File "/Users/VANXV/.virtualenvs/zss322/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/Users/VANXV/.virtualenvs/zss322/lib/python3.6/site-packages/django/utils/autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "/Users/VANXV/.virtualenvs/zss322/lib/python3.6/site-packages/django/__init__.py", line 22, in setup
    configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
  File "/Users/VANXV/.virtualenvs/zss322/lib/python3.6/site-packages/django/utils/log.py", line 75, in configure_logging
    logging_config_func(logging_settings)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/logging/config.py", line 795, in dictConfig
    dictConfigClass(config).configure()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/logging/config.py", line 566, in configure
    '%r: %s' % (name, e))
ValueError: Unable to configure handler 'default': [Errno 2] No such file or directory: '/sourceDns/log/all.log'

看见这么长的bug是不是很可怕？第一步：我们很笨拙的一个一个单词翻译，其实这样没有什么不好的。找到了错误的根源第二步：在google查，为什么错误。原来有很多人和我们一样有这个报错。第三步：改setting.py 文件处理。