77 lines
1.5 KiB
Markdown
77 lines
1.5 KiB
Markdown
Continue
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========
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Skips the rest of the current iteration, and starts the next one.
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```Python
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>>> for x in range(6):
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... if x == 3:
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... continue
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... print(x)
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...
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0
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1
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2
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4
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5
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```
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```Python
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while len(directory_queue) > 0:
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directory = directory_queue.popleft()
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try:
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filenames = os.listdir(directory)
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except PermissionError:
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continue
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for filename in filenames:
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...
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```
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####Continue is great for cleaning code with lots of conditions:
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#####Without continue:
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Nested:
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```Python
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for submission in submissions:
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if submission.author is not None:
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if not submission.over_18:
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if 'suggestion' in submission.title.lower():
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print('Found:', submission.id)
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```
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or all grouped up:
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```Python
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for submission in submissions:
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if (
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submission.author is not None
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and not submission.over_18
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and 'suggestion' in submission.title.lower()
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):
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print('Found:', submission.id)
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```
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#####With continue:
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```Python
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for submission in submissions:
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if submission.author is None:
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continue
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if submission.over_18:
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continue
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if 'suggestion' not in submission.title.lower():
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continue
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print('Found:', submission.id)
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```
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Notice that all of the checks are the opposite of the originals. The mentality changes from "keep only the items with the right properties" to "discard the items with the wrong properties", and the result is the same.
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