python file open try except error

1try:
2  # Dangerous stuff
3except ValueError:
4  # If you use try, at least 1 except block is mandatory!
5  # Handle it somehow / ignore
6except (BadThingError, HorrbileThingError) as e:
7  # Hande it differently
8except:
9  # This will catch every exception.
10else:
11  # Else block is not mandatory.
12  # Dangerous stuff ended with no exception
13finally:
14  # Finally block is not mandatory.
15  # This will ALWAYS happen after the above blocks.

1import sys
2try:
3	S = 1/0 #Create Error
4except: # catch *all* exceptions
5    e = sys.exc_info()
6    print(e) # (Exception Type, Exception Value, TraceBack)
7
8############
9#    OR    #
10############
11try:
12	S = 1/0
13except ZeroDivisionError as e:
14    print(e) # ZeroDivisionError('division by zero')

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