#糟糕的代码风格
try:
    do_something()
except:
    pass

#值得提倡的代码风格
try:
    do_something()
except ValueError:  # Catch some very specific exception - KeyError, ValueError, etc.
    pass

#会引发Exception的函数样例
def get_number():
    return int('foo')

#利用logging模块 [最佳实践__使用默认Python库已经提供的方法而不是自己去写]
import logging
try:
    x = get_number()
except Exception as ex:
    logging.exception('Caught an error')

# The Python 2.x version. It's a little less work.
import sys
import traceback
def log_traceback(ex, ex_traceback):
    tb_lines = traceback.format_exception(ex.__class__, ex, ex_traceback)
    tb_text = ''.join(tb_lines)
    # I'll let you implement the ExceptionLogger class, and the timestamping.
    exception_logger.log(tb_text)
try:
    x = get_number()
except Exception as ex:
    # Here, I don't really care about the first two values.
    # I just want the traceback.
    _, _, ex_traceback = sys.exc_info()
    log_traceback(ex, ex_traceback)

# The Python 3 version. It's a little less work.
import traceback
def log_traceback(ex):
    tb_lines = traceback.format_exception(ex.__class__, ex, ex.__traceback__)
    tb_text = ''.join(tb_lines)
    # I'll let you implement the ExceptionLogger class, and the timestamping.
    exception_logger.log(tb_text)
try:
    x = get_number()
except Exception as ex:
    log_traceback(ex)

import sys
import traceback
def handle_exeception(e):
    traceback.print_exc()
    try:
        raise Exception
    except:
        f = sys.exc_info()[2].tb_frame.f_back
    print 'EXCEPTION|%s:%s:%d "%s"' %(f.f_code.co_filename, f.f_code.co_name, f.f_lineno, e)
    return

try:
    x = get_number()
except Exception, e:
    handle_exeception(e)

英文链接：

https://realpython.com/blog/python/the-most-diabolical-python-antipattern/

相关链接：

• https://docs.python.org/2/library/logging.html#logging.exception
• https://docs.python.org/2/library/traceback.html#traceback.print_exc
• https://docs.python.org/2/library/sys.html#sys.exc_info
• =
• http://stackoverflow.com/questions/4508849/how-to-log-python-exception
• http://stackoverflow.com/questions/20241478/how-can-i-get-the-traceback-object-sys-exc-info2-same-as-sys-exc-traceba
• http://stackoverflow.com/questions/8238360/how-to-save-traceback-sys-exc-info-values-in-a-variable
• =
• http://farmdev.com/src/secrets/framehack/index.html
• http://stackoverflow.com/questions/1140194/in-python-how-do-i-obtain-the-current-frame
• http://farmdev.com/src/secrets/framehack/#id4