lwjs

Light Weight JSON Shell is a package to allow simple inline "like-in-bash-shell" expressions in JSON documents. Technically, no limits exist to apply on Python objects as well. It recursively scans any given object and performs evaluation of fun and ref and sub and esc expressions.
Consider the example:

import lwjs

data = "$(calc 5 + 5)"
data = lwjs.cook(data)
print(data)

data = { "tasks": [ "1+1", "2+2" ], "solve": "$(map $(@calc) ${tasks})" }
data = lwjs.cook(data)
print(data)

data = { "in": { "v1": 2, "v2": 5 }, "r": "$(calc ${in.v1} + ${in.v2})" }
data = lwjs.cook(data)
print(data)

data = "Must escape '$$' character"
data = lwjs.cook(data)
print(data)

Legend:

• fun expression example is "$(calc)" or "$(map)"
• ref expression example is "$(@calc)"
• sub expression example is "${tasks}" or "${in.v1}" or "${in.v2}"
• esc expression example is $$: whenever you need a $ you have to pay $$

Output:

10
{'tasks': ['1+1', '2+2'], 'solve': [2, 4]}
{'in': {'v1': 2, 'v2': 5}, 'r': 7}
Must escape '$' character

NB: calc and map are lwjs-shipped funs: calc.py, map.py

installation

pip install lwjs

moar

Visit project homepage for more documentation and examples