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import functools
import time
def retry(*, tries: int = 30, delay: int = 1):
"""Decorator for retries.
Retry a function until code no longer raises an exception or
max tries is reached.
Example:
@retry(tries=5, delay=1)
def try_something_that_may_not_be_ready():
...
"""
def _retry(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
last_error = None
for _ in range(tries):
try:
func(*args, **kwargs)
break
except Exception as e:
last_error = e
time.sleep(delay)
else:
if last_error:
raise last_error
return wrapper
return _retry
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