examples/context_manager.py
# -*- coding: utf-8 -*-
import riprova
# Store number of function calls for error simulation
calls = 0
# Register retriable operation with custom evaluator
def mul2(x):
global calls
if calls < 4:
calls += 1
raise RuntimeError('simulated call error')
return x * 2
# Run task via context manager
with riprova.Retrier() as retry:
result = retry.run(mul2, 2)
print('Result 1: {}'.format(result))
# Or alternatively create a shared retrier and reuse it across multiple
# context managers.
retrier = riprova.Retrier()
with retrier as retry:
calls = 0
result = retry.run(mul2, 4)
print('Result 2: {}'.format(result))
with retrier as retry:
calls = 0
result = retry.run(mul2, 8)
print('Result 3: {}'.format(result))