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Description:

lazycon 0.6.3

Easy config files in pure Python!
What you can do directly in your configs:

define constants
define functions
use import statements
call functions and apply arithmetic operations
a static read-only scope
static checking: cycles detection, undefined variables detection

Install
pip install lazycon

Features
Basic
Let's define a config file example.config and see what it can do
# define constants
num_steps = 100
database_table = 'user_data'

# or more complex structures
parameters = {
'C': 10,
'metric': 'roc_auc',
}
values_to_try = [0, 1, 2, 3, 4]

# you can use and call builtins
some_range = list(range(100))
# or even comprehensions!
squares = [i ** 2 for i in range(20)]

Now let's load our config from python
from lazycon import load

config = load('example.config')
print(config.database_table)
# 'user_data'

Need to change an existing config? No problem!
from lazycon import load

config = load('example.config')
config.update(
database_table='customer_data',
some_range=[1, 3, 5],
)
config.dump('updated.config')

Advanced
Python-based configs can do so much more! Let's create another advanced.config:
# combine config entries
x = 1
y = 2
z = x + y

# define lambdas
callback = lambda value: 1 if value == 0 else (1 / value)

# or more complex functions
def strange_normalize(a, b):
temp = a ** 2 + b ** 2
return a / temp, b / temp

You can import from other python libraries:
import numpy as np
from math import sqrt

const = np.pi / np.e
proportions = sqrt(2)

Or even other configs!
# import from `example.config` defined above
from .example import *

extended_values_to_try = values_to_try + [101, 102]

Contribute
Just get the project from GitHub and modify it how you please!
git clone https://github.com/maxme1/lazycon.git
cd lazycon
pip install -e .