Python 常用资源

常用代码

遍历对象

for key in a.__dict__:
    print key,':',a.__dict__[key]

调试方法

assert False   //引发异常，观察错误界面
import logging
logging.info('')  //写日志

获得当前时间

#时间戳
time.time()
#日期时间
time.ctime()
#iso时间
datetime.fromtimestamp(time.time()).isoformat()
#固定格式
time.strftime('%Y-%m-%d',time.localtime(time.time())) ### 日期到时间戳
dateC=datetime.datetime(2010,6,6,8,14,59)
timestamp=time.mktime(dateC.timetuple()) ### 时间戳到日期
ltime=time.localtime(1237515355.0)
timeStr=time.strftime("%Y-%m-%d %H:%M:%S", ltime) ### 之后的包从绝对位置导入
from __future__ import absolute_import

3.5.0 Exceptions

BaseException
 +-- SystemExit
 +-- KeyboardInterrupt
 +-- GeneratorExit
 +-- Exception
      +-- StopIteration
      +-- StopAsyncIteration
      +-- ArithmeticError
      |    +-- FloatingPointError
      |    +-- OverflowError
      |    +-- ZeroDivisionError
      +-- AssertionError
      +-- AttributeError
      +-- BufferError
      +-- EOFError
      +-- ImportError
      +-- LookupError
      |    +-- IndexError
      |    +-- KeyError
      +-- MemoryError
      +-- NameError
      |    +-- UnboundLocalError
      +-- OSError
      |    +-- BlockingIOError
      |    +-- ChildProcessError
      |    +-- ConnectionError
      |    |    +-- BrokenPipeError
      |    |    +-- ConnectionAbortedError
      |    |    +-- ConnectionRefusedError
      |    |    +-- ConnectionResetError
      |    +-- FileExistsError
      |    +-- FileNotFoundError
      |    +-- InterruptedError
      |    +-- IsADirectoryError
      |    +-- NotADirectoryError
      |    +-- PermissionError
      |    +-- ProcessLookupError
      |    +-- TimeoutError
      +-- ReferenceError
      +-- RuntimeError
      |    +-- NotImplementedError
      |    +-- RecursionError
      +-- SyntaxError
      |    +-- IndentationError
      |         +-- TabError
      +-- SystemError
      +-- TypeError
      +-- ValueError
      |    +-- UnicodeError
      |         +-- UnicodeDecodeError
      |         +-- UnicodeEncodeError
      |         +-- UnicodeTranslateError
      +-- Warning
           +-- DeprecationWarning
           +-- PendingDeprecationWarning
           +-- RuntimeWarning
           +-- SyntaxWarning
           +-- UserWarning
           +-- FutureWarning
           +-- ImportWarning
           +-- UnicodeWarning
           +-- BytesWarning
           +-- ResourceWarning