Python:Control structures: Difference between revisions
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Created page with "Category:Python To catch all exceptions (not wise) ==Exception handling== <syntaxhighlight lang=python> try: block except: blockifexceptionisthrown </syntaxhighli..." |
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[[Category:Python]] | [[Category:Python]] | ||
Most flow control is standard. Indentation defines the code block to execute. You must be strich, all indents must be the same in a block, amix of spaces and tab is not allowed (unless each line uses the same mix).......... | |||
<syntaxhighlight lang=python> | |||
if expression: | |||
block | |||
else: | |||
otherblock | |||
</syntaxhighlight> | |||
;<code>pass</code> | |||
:No operation, use e.g. to avoid negative tests | |||
==Exception handling== | |||
To catch all exceptions (not wise) | To catch all exceptions (not wise) | ||
<syntaxhighlight lang=python> | <syntaxhighlight lang=python> | ||
try: | try: | ||
Revision as of 19:31, 2 May 2018
Most flow control is standard. Indentation defines the code block to execute. You must be strich, all indents must be the same in a block, amix of spaces and tab is not allowed (unless each line uses the same mix)..........
if expression:
block
else:
otherblock
pass- No operation, use e.g. to avoid negative tests
Exception handling
To catch all exceptions (not wise)
try:
block
except:
blockifexceptionisthrown
You better only catch the exceptions you expect. You can choose from the available exceptions [1]
- except NameError
- The variable does not exist