I want to evaluate the value of a dict key, using the dict itself. For example:
dict_ = {'x': 1, 'y': 2, 'z':'x+y'} dict_['z'] = eval(dict_['z'], dict_) print(dict_)
When I do this it includes a bunch of unnecessary stuff in the dict. In the above example it prints:
{'x': 1, 'y': 2, 'z': 3, '__builtins__': bunch-of-unnecessary-stuff-too-long-to-include
Instead, in the above example I just want:
{'x': 1, 'y': 2, 'z': 3}
How to resolve this issue? Thank you!
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Answer
Pass a copy of dict to eval()
:
dict_ = {"x": 1, "y": 2, "z": "x+y"} dict_["z"] = eval(dict_["z"], dict_.copy()) print(dict_)
Prints:
{'x': 1, 'y': 2, 'z': 3}