September 2014
Intermediate to advanced
512 pages
12h 39m
English
Content preview from IPython Interactive Computing and Visualization CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Finding a Boolean propositional formula from a truth table
The logic module in SymPy lets us manipulate complex Boolean expressions, also known as propositional formulas.
This recipe will show an example where this module can be useful. Let's suppose that, in a program, we need to write a complex if statement depending on three Boolean variables. We can think about each of the eight possible cases (true, true and false, and so on) and evaluate what the outcome should be. SymPy offers a function to generate a compact logic expression that satisfies our truth table.
How to do it...
- Let's import SymPy:
In [1]: from sympy import * init_printing() - Let's define a few symbols:
In [2]: var('x y z') - We can define propositional formulas with symbols and a few ...
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