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dicteval 0.0.6-3
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Metadata-Version: 1.2
Name: dicteval
Version: 0.0.6
Summary: Evaluate expressions in dict/json objects
Home-page: https://github.com/osantana/dicteval
Author: Osvaldo Santana Neto
Author-email: dicteval@osantana.me
License: MIT
Description: 
        dicteval
        ========
        
        Library to evaluate expressions in dict/json objects.
        
        
        Requirements
        ------------
        
        * Python 3.6+
        
        
        Basic Usage
        -----------
        
        Module ``dicteval`` will evaluate basic types with no modifications but it will
        evaluate dicts (or json objects) containing keys started with ``=`` (equal)
        symbol as an expression:
        
           >>> from dicteval import dicteval
           >>> dicteval(3)
           3
           >>> dicteval([3, 5])
           [3, 5]
           >>> dicteval((5, 3))
           [5, 3]
           >>> dicteval({"=sum": [3, 5]})
           8
           >>> dicteval({"=": 5})  # = symbol alone is a 'nop' function
           5
        
        You can provide a dictionary with context to be used during evaluation process.
        
          >>> dicteval({"=": "!{var}"}, context={"var": 1.0})
          1.0
        
        You can also wrap your string content with ``@{}`` to force a Python ``eval()``
        with the context provided:
        
           >>> dicteval({"=sum": [3, "@{var + 2}"]}, context={"var": 3})
           8
        
        .. warning::
           This functionality will be removed (or changed) in future releases for
           security reasons.
        
        
        Functions
        ---------
        
        You can use the following builtin functions in your expressions:
        
        
        Function ``=any``
        '''''''''''''''''
        
        Returns ``True`` if any element of sequence is true.
        
            >>> dicteval({"=any": [1, 2, 3]})
            True
            >>> dicteval({"=any": [0, 0]})
            False
        
        
        Function ``=eq``
        ''''''''''''''''
        
        Returns ``True`` if all elements of sequence are equals:
        
           >>> dicteval({"=eq": [1, 1, 1, 1]})
           True
        
        
        Function ``=if``
        ''''''''''''''''
        
        Evaluates condition and returns first value if true, otherwise, returns second value.
        If no false value is supplied, it is assumed to be ``None``.
        
            >>> dicteval({"=if": [{"=": "@{var > 5}"}, "yes", "no"]}, context={"var": 6})
            'yes'
            >>> dicteval({"=if": [{"=": "@{var > 5}"}, "yes", "no"]}, context={"var": 4})
            'no'
            >>> dicteval({"=if": [{"=": "@{var > 5}"}, "yes"]}, context={"var": 4})
        
        
        Function ``=neq``
        '''''''''''''''''
        
        Returns ``True`` if elements of sequence are different:
        
           >>> dicteval({"=neq": [1, 1, 1, 5]})
           True
        
        
        Function ``=`` (or ``nop``)
        '''''''''''''''''''''''''''
        
        Returns the same values passed as arguments:
        
           >>> dicteval({"=": [1, 2, 3, 4]})
           [1, 2, 3, 4]
           >>> dicteval({"=nop": "spam"})
           'spam'
        
        
        Function ``=not``
        '''''''''''''''''
        
        Returns the boolean inverse of argument:
        
           >>> dicteval({"=not": False})
           True
           >>> dicteval({"=not": True})
           False
           >>> dicteval({"=not": None})
           True
           >>> dicteval({"=not": "XYZ"})
           False
        
        
        Function ``=sum``
        '''''''''''''''''
        
        Returns a number with the sum of arguments:
        
           >>> dicteval({"=sum": [3, 5]})
           8
        
        
        Function ``=mul``
        '''''''''''''''''
        
        Returns a number with the product of arguments:
        
           >>> dicteval({"=mul": [3, 5]})
           15
        
        
        Function ``=all``
        '''''''''''''''''
        
        Return True if all elements of the iterable are true (or if the iterable is empty)
        
           >>> dicteval({"=all": (True, False)})
           False
           >>> dicteval({"=all": (True, True)})
           True
        
        
        Function ``=divmod``
        ''''''''''''''''''''
        
        Returns a tuple containing the quotient and remainder after division:
        
           >>> dicteval({"=divmod": [8,3]})
           (2, 2)
           >>> dicteval({"=divmod": [7.5,2.5]})
           (3.0, 0.0)
        
        
        Function ``=zip``
        '''''''''''''''''
        
        Return list of aggregate tuples constructed from elements of multiple iterables.
        
           >>> dicteval({"=zip": [[1, 2, 3], [4, 5], [6, 7, 8, 9]]})
           [(1, 4, 6), (2, 5, 7)]
        
        
        To Do
        -----
        
        - Add more functions to the builtin language
        
        
        Contribute
        ----------
        
        To contribute to `dicteval`: 
        
            1. Clone this repository and `cd` into it
            2. Install dev dependencies with [pipenv](https://github.com/pypa/pipenv)
               ```bash
               pipenv install --dev
               ```
            3. Create a branch, like `git checkout -b [feature_name]`
            4. Git commit changes
            5. Pull request
        
         
        License
        -------
        
        This software is licensed under MIT license.
        
Platform: UNKNOWN
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Requires-Python: >=3.7.0