Python provides try, except and finally statements to catch exceptions. An exception occurred when something is wrong and you can use these statements to handle it gracefully.

• try: Try to run the code.
• except: If an exception is raised while running the code, then run code in except statement.
• finally: Regardless of whether the code in try failed or succeed, run the code in finally statement.

Here is an example showing how they work together.

try:
    print(x)
 
except:
    print("except: x doesn't exist.")
 
finally:
    print("finally: Regardless of whether or not try fail, I'm showing this line")

Output

except: x doesn't exist.
finally: Regardless of whether or not try fail, I'm showing this line

Reference

• https://docs.python.org/3/tutorial/errors.html