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Python retry utility

Project description

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A simple way to auto retry a funciton that has the possibility of raising an error. You can either call retry directly or decorate a function to get it to retry. Intelligent matching logic allows you to retry certain exception while raising other exceptions.

Call a function directly:

from retrypy import retry, check

def dummy_func():
    print "dummy_func called..."
    raise Exception("House")

retry.call(
    dummy_func,
    times=2
)

dummy_func called...
dummy_func called...
Exception: House

# usign a check method
retry.call(
    dummy_func,
    check = check.message_equals("foobar")
)
dummy_func called...
Exception: House

Decorating a function:

# Only retry IOErrors
@retry.decorate(IOError, times=2)
def dummy_func():
    print "dummy_func called..."
    raise IOError("House")
dummy_func()

dummy_func called...
dummy_func called...
IOError: House

# Retry any Exception, use a custom wait function
@retry.decorate(times=2, wait=lambda n: 2*n)
def dummy_func():
    print "dummy_func called..."
    raise Exception("House")
dummy_func()

dummy_func called...
dummy_func called...
Exception: House

Wrap a function and retrun a new callable:

def dummy_func():
    print "dummy_func called..."
    raise Exception("House")

func = retry.wrap(
    dummy_func,
    times=2
)
func()

dummy_func called...
dummy_func called...
Exception: House

Installation:

>> pip install retrypy

Development:

>> git clone https://github.com/toddsifleet/retrypy
>> cd retrypy
>> make bootstrap
>> make

License:

See LICENSE

Project details


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