try except python show error message code example

Example 1: python file open try except error

def FileCheck(fn):
    try:
      open(fn, "r")
      return 1
    except IOError:
      print "Error: File does not appear to exist."
      return 0

result = FileCheck("testfile")
print result

Example 2: try except python

try: #try to do the following
  print("Hi there")
except: #If what is meant to happen in (try) fails, do this.
  print("A error happened with the code above")