Python Task Retry

• Free software: MIT license
• Documentation: https://task-retry.readthedocs.io.

Usage

```python # Define the function to be retried def my_function():

# Do some stuff that might fail pass

# Create an instance of RetryOptions with default options options = RetryOptions()

# Retry the function until it succeeds or reaches the maximum number of attempts result = options.retry(my_function)

# You can also specify a retry_if function and an on_retry function def retry_if_exception(e):

return isinstance(e, MyException)

def on_retry_exception(e, attempt):

print(f'Function failed on attempt {attempt}, error: {e}')

options.retry(my_function, retry_if=retry_if_exception, on_retry=on_retry_exception) ```

Or Use As Decorator

```python @RetryOptionsDecorator() def my_function():

# code to retry

@RetryOptionsDecorator(max_attempts=5) def my_function():

# code to retry

@RetryOptionsDecorator(retry_if=retry_if_exception, on_retry=on_retry_exception) def my_function():

# code to retry

```

Features

## Class Methods __init__(self, delay_factor=0.2, randomization_factor=0.25, max_delay=30, max_attempts=8) Initializes a new instance of the RetryOptions class with the specified parameters.

delay_factor : The delay factor to use when calculating the delay time between retries.

randomization_factor : The randomization factor to use when calculating the delay time between retries.

max_delay : The maximum delay time between retries.

max_attempts : The maximum number of attempts to retry the function.

delay(self, attempt) Calculates the delay time between retries based on the current attempt number.

attempt : The number of the current retry attempt.

Returns : The delay time in seconds.

retry(self, fn, retry_if=None, on_retry=None) Retries the specified function if it fails.

fn : The function to retry.

retry_if : An optional function that determines whether to retry the function based on the exception that was thrown.

on_retry : An optional function that is called each time the function is retried.

Returns : The return value of the function if it succeeds.

Raises : Exception if the maximum number of attempts is reached and the function still fails.

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