19 lines
596 B
Python
19 lines
596 B
Python
#!/usr/bin/env python3
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import time
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from urllib.error import URLError
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from urllib.request import Request, urlopen
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RETRY_DELAYS = (3, 10)
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def urlopen_with_retry(req: Request, timeout: int = 30):
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"""urlopen wrapper that retries transient network failures."""
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last_err: Exception | None = None
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for attempt in range(len(RETRY_DELAYS) + 1):
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try:
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return urlopen(req, timeout=timeout)
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except (URLError, TimeoutError) as e:
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last_err = e
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if attempt < len(RETRY_DELAYS):
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time.sleep(RETRY_DELAYS[attempt])
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raise last_err
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