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Use break and continue to do this. Breaking nested loops can be done in Python using the following: for a in range(...): for b in range(..): if some condition: # break the inner loop break else: # will be called if the previous loop did not end with a `break` continue # but here we end up right after breaking the inner loop, so we can # simply break the outer loop as well break Another way is to wrap everything in a function and use return to escape from the loop.
Jan 30, 2013 · Consider rephrasing "Don't use while True and break statements. It's bad programming." While I try to avoid them as a general rule, many times I have simplified logic structures in a while loop simply by using a single break statement. While I agree that 15 break statements scattered through a while loop isn't great, I would posit that neither is 200 lines of code.
Is there a way to make this work? Or do I have do one check to break out of the input loop, then another, more limited, check in the outside loop to break out all together if the user is satisfied? python nested-loops break control-flow edited Nov 28, 2022 at 23:45 Martijn Pieters 1.1m3164.2k3.4k asked Oct 10, 2008 at 0:02 Matthew Scharley 131k55196224 2 @Nathan See Why python don't natively allow a keyword like goto for breaking out of n loops a very nice explanation by nathan – Shivam ...
Nov 15, 2016 · In Python you can write an else clause for a loop, which is executed when no break happens in the loop, or when the loop terminates naturally so to speak. Sometimes you can use it to break from multiple loops. for j in some_other_range: if need_break(i, j): break else: continue break # break happens in inner loop, break outer loop too.
Apr 8, 2010 · Most times you can use a number of methods to make a single loop that does the same thing as a double loop. In your example, you can use itertools.product to replace your code snippet with. import itertools. for word1, word2 in itertools.product(buf1, buf2): if word1 == word2: print "BINGO " + word1 + ":" + word2. break.
See also: How do I split the definition of a long string over multiple lines? if there is a long string literal in the code that needs to be broken up to wrap the line nicely.
May 25, 2017 · Because break cannot be used to break out of an if statement - it can only break out of loops. That's the way Python (and most other languages) are specified to behave. What are you trying to do? Perhaps you should use sys.exit() or return instead?
if somecondition: break; I dont think you can break out of the with... you need to use a loop... or just do the function method others mentioned
What sorts of methods exist for prematurely exiting an if clause? There are times when I'm writing code and want to put a break statement inside of an if clause, only to remember that those can o...
Jun 21, 2021 · To answer the broader question, the only alternatives to break are: Careful use of tests to ensure the loop condition itself terminates when desired, and no code after the condition becomes true that should only execute when false is actually executed (this is what the minimal fix described above does)
