python defualt error handler

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1try:
2  print("I will try to print this line of code")
3except:
4  print("I will print this line of code if an error is encountered")

1def FileCheck(fn):
2    try:
3      open(fn, "r")
4      return 1
5    except IOError:
6      print "Error: File does not appear to exist."
7      return 0
8
9result = FileCheck("testfile")
10print result

1import sys
2def my_except_hook(exctype, value, traceback):
3    if exctype == KeyboardInterrupt:
4        print "Handler code goes here"
5    else:
6        sys.__excepthook__(exctype, value, traceback)
7sys.excepthook = my_except_hook

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