Detailed explanation of error and exception handling on try-except usage in Python

The examples in this article describe error and exception handling operations in Python. Share it with everyone for your reference, the details are as follows:

#coding=utf8
print '''''
程序编译时会检测语法错误。
当检测到一个错误，解释器会引发一个异常，并显示异常的详细信息。
在代码中添加错误检测及异常处理，只需要将代码封装在try-except语句中。
try:
  try_suite
except :
  except_suite
-------------------------------------------------------------------------------
try之后的代码组就是用户管理的代码。
except之后的代码组是处理错误的代码。
'''
try:
  filename=raw_input("Enter file name:")
  output=open(filename,'r')
  for eachline in output:
    print eachline
  output.close()
except IOError,e:
  print "file open error:",e

Running results:

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