Passing expressions and getting results from Python interpreter back to Django?

Question

How do you pass and get results to a python interpreter where the input is coming from a website form?

For instance if you have a web form populated with basic arithmetic expressions like addition, subtraction, multiplication and division.

If you want to pass that expression like 1+1 or 4/6 to the python interpreter and get the result back to show on the web page is that possible? I'm using Django as framework.

I am not sure what you meant in the question, by interpreter do you mean the `interactive shell` ? — Sidhin S Thomas, Jan 29 '17 at 15:39
Possible duplicate of [Embedding a Python shell in a webpage](http://stackoverflow.com/questions/11813301/embedding-a-python-shell-in-a-webpage) — Stephen Rauch, Jan 30 '17 at 03:50

score 0 · Answer 1 · answered Jan 29 '17 at 15:47

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Django is Python. You can write any valid Python code in your view.

answered Jan 29 '17 at 15:47

Daniel Roseman

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score 0 · Accepted Answer · edited May 23 '17 at 11:53

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You can always use eval() to evaluate an expression.

>>> eval('4*4')
16
>>>

DANGER Since eval() can execute arbitrary code you should never ever use it with user input. In your case I strongly discourage using it.

In short, there is no very easy way with built-in python functions.

You could try one of the solutions from the answers on this question

edited May 23 '17 at 11:53

Community

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answered Jan 29 '17 at 16:11

trixn

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Passing expressions and getting results from Python interpreter back to Django?

2 Answers2