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🖥️ Exceptions in Python: ALWAYS run your code (FINALLY in Python)
The TRY / EXCEPT statements in Python have another and optional FINALLY clause. The FINALLY block, if specified, will always be executed – regardless if the TRY block raises an error or not, and under any circumstances.
try:
x = 1/0
except:
print('Something went wrong')
finally:
print('Always execute this')
Imagine that you always have to implement some sort of action to clean up after executing your code. Well, Python allows you to do so, using the finally clause. This can be very useful to: close objects, release and clean up external resources.
For instance, you may be connected to a remote data center through the network, or even working with a file… In all these circumstances, you must clean up the resource before the program comes to a halt, whether it successfully ran or not. All these actions (closing a file or disconnecting from network) are performed ONLY in the finally clause, to guarantee its execution. Therefore, the program can continue properly – without leaving the file object open.
f = open('myfile.txt')
try:
print(f.read())
except:
print("Something went wrong")
finally:
f. close()
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Exceptions in Python: ALWAYS run your code (FINALLY in Python)
