This page (revision-16) was last changed on 2025-07-30 12:48 by Murray Altheim

This page was created on 2025-07-30 02:51 by Murray Altheim

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Page References

Incoming links Outgoing links
Micro Python Tutorial Exercise 02
MicroPythonTutorialExercise02

Version management

Difference between version and

At line 3 added one line
%%info
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%%
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%%filename main.py %%
%%python
%%filename main.py %% %%python
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print(i)
print(i)
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%%warning
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%%
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In Python there is a {{try-except-finally}} structure called a "compound statement" consisting of three separate __blocks__, which is ideal for a main.py file.
There is a {{try-except-finally}} structure called a __compound statement__, consisting of three separate __blocks__. This is ideal for a main.py file, and is also a very common and useful structure. It is composed of three parts:
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* {{try}}: this block contains is the code we want to ''try'' to execute
* {{except}}: this block catches any errors or exceptions that occur and executes the block, handling the exception
* {{finally}}: no matter what happens, this block will be executed after the {{try}} (and possibly {{except}}) blocks are executed
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except Exception as ex:
except Exception as ex: # we assign the Exception to the variable 'ex'
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!! Optional Blocks
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As mentioned above, in the {{try-except-finally}} compound statement, the {{except}} or {{finally}} block is optional.
If you don't need to do anything after exiting the {{try}} block you can leave off the {{finally}} block:
%%filename main.py %%
%%python
try:
print('hello world.')
except Exception:
print('an error occurred.')
%%
or, just using {{finally}}:
%%filename main.py %%
%%python
try:
print('hello world.')
finally:
print('complete.')
%%
This would be useful when you want the Exception to be passed on and handled somewhere else.
This page (revision-16) was last changed on 2025-07-30 12:48 by Murray AltheimTop