Advanced python dictionary(hash-table), which can link it-self keys and make calculations into the keys of the dict
Use the package manager pip to install foobar.
pip install linked-dict{'key' : '...$(expression)$...'}from linked_dict import LinkedDict
from json import dumps
dictionary = LinkedDict({}) # {} - your dictSimple link:
example = LinkedDict(
{
'a': 5,
'b': '$(a)$'
}
)
print(example)
{
'a': 5,
'b': 5
}Expression with one key. As you can see now I added a space outside this expression, and the final value is string:
example = LinkedDict(
{
'a': 5,
'b': '$(a * 2)$ ' # here with a space
}
)
print(example)
{
'a': 5,
'b': '10 '
}Link other expressions:
example = LinkedDict(
{
'a': 5,
'b': 100,
'c': '$(b + d)$',
'd': '$(b + a)$'
}
)
print(example)
{
'a': 5,
'b': 100,
'c': 205,
'd': 105
}Using all built-in types:
example = LinkedDict(
{
'a': ['one_item'],
'b': '$(a + ["another_item"])$'
}
)
print(example)
{
'a': ['one_item'],
'b': ['one_item', 'another_item']
}Using your own functions into expressions:
def some_func(arg):
return arg + 1
example = LinkedDict(
{
'a': 5,
'b': '$(some_func(a))$'
},
loc=locals(), # to be able to use your functions
glob=globals() # to be able to use your functions
)
print(example)
{
'a': 5,
'b': 6
}When you change a value, all values that link it change their values too. But links work only in one direction
example = LinkedDict(
{
'a': 5,
'b': '$(a)$'
}
)
print(example)
# >>> {'a': 5, 'b': 5}
example['a'] = 'another_val'
print(example)
# >>> {'a': 'another_val', 'b': 'another_val'}
example['b'] = '4'
print(example)
# >>> {'a': 'another_val', 'b': 4}
# !!! 'b' links 'a', but 'a' doesn't link 'b'1. Keys of your dict must be only strings
{5: 'abc', True: []} # is prohibited
{'5': 'abc', 'True': []} # is allowed2. Don't make loops of links. Dictionary is protected of this, but you will get the Error
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to update tests as appropriate.