fief 0.1.2

Decorator for effective parameter filtering

# FiEf, the Effective Parameter Filter

## The problem
You have this function:

def func(a, b):
# some implementation

and that configuration, extrapolated from CLI, init file and whatever:

config = {'a': 1, 'b': 'doe', 'loglevel': 'WARNING'}

Then, you can't just do that:

func(\*\*config)

Because of the expected:

TypeError: func() got an unexpected keyword argument 'loglevel'

One solution can be:

# perform an interesting and easily maintenable treatment
config_func = {
arg: val
for arg, val in config
if arg in ('a', 'b')
}
# and, finally, call that function
func(\*\*config_func)

But, as any programmer, you will use the *inspect* module, that can give you the formal parameter of *func*, and filter out unwanted effective parameters.
Just as FiEf do.

## The solution
About the previous *func*:

from fief import filter\_effective\_parameters as fief

@fief
def func(a, b):
# some implementation

# and then, use it as you always want to:
func(\*\*MY\_BIG\_CONFIG\_DICT\_WITH\_MANY\_WEIRD\_KEYS)

# or as you always do:
func(a=42, b='pip install efpafi')

# or, for a one time usage:
fief(func)(\*\*MY\_BIG\_CONFIG\_DICT\_WITH\_MANY\_WEIRD\_KEYS)

## Installation

pip install efpafi

## Licence
WTFPL.