try and except in python

1try:
2  # some code
3except Exception as e:
4	print("ERROR : "+str(e))

1try:
2  print("I will try to print this line of code")
3except:
4  pass

1raise Exception("message")

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")

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.

1# Try and Except in python are for taking care of errors
2# which may occur at runtime.
3# For example:
4
5# If flask is not installed, you will get an ImportError saying flask
6# is not installed.
7# The try keyword is to try running that block of code which may cause an error.
8try:
9    from flask import Flask
10except ImportError:
11    print('Flask is not installed! Use pip install flask to install it.')