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PODifferent use (not the most common one) of else clause in python
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2012-11-08T20:55:38.137
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2012-11-08T21:08:01.053
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<p>There is an exercise in 6.00x edX whose answer's suggestion provided by them is as follows:</p> <pre><code>def genPrimes(): primes = [] # primes generated so far last = 1 # last number tried while True: last += 1 for p in primes: if last % p == 0: break else: primes.append(last) yield last </code></pre> <p>Looking to the identation I can clearly see that this ELSE is not related to the IF. I thought it was a bug but when I executed, the code was fine and I can't understand what is happening, what does that ELSE does?</p>
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<python><generator><if-statement>
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Different use (not the most common one) of else clause in python
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1. COI would guess the `else` clause executes if the for loop doesn't run once, e.g. if `primes==[]`.
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