tt - the Boolean expression toolbox¶
Welcome to the documentation site for tt.
Warning
tt is heavily tested and fully usable, but is still pre-1.0/stable software with no guarantees of avoiding breaking API changes until hitting version 1.0.
Synopsis¶
tt is a Python library and command-line tool for working with Boolean expressions. Please check out the project site for more information.
Installation¶
tt is tested on CPython 2.7, 3.3, 3.4, 3.5, and 3.6. You can get the latest release from PyPI with:
pip install ttable
Basic Usage¶
tt aims to provide a Pythonic interface for working with Boolean expressions. Here are some simple examples from the REPL:
>>> from tt import BooleanExpression, TruthTable
>>> b = BooleanExpression('A xor (B and 1)')
>>> b.tokens
['A', 'xor', '(', 'B', 'and', '1', ')']
>>> b.symbols
['A', 'B']
>>> print(b.tree)
xor
`----A
`----and
`----B
`----1
>>> b.evaluate(A=True, B=False)
True
>>> t = TruthTable(b)
>>> print(t)
+---+---+---+
| A | B | |
+---+---+---+
| 0 | 0 | 0 |
+---+---+---+
| 0 | 1 | 1 |
+---+---+---+
| 1 | 0 | 1 |
+---+---+---+
| 1 | 1 | 0 |
+---+---+---+
>>> t = TruthTable(from_values='01xx')
>>> t.ordering
['A', 'B']
>>> for inputs, result in t:
... inputs, result
...
(<BooleanValues [A=0, B=0]>, False)
(<BooleanValues [A=0, B=1]>, True)
(<BooleanValues [A=1, B=0]>, 'x')
(<BooleanValues [A=1, B=1]>, 'x')
>>> t.equivalent_to(b)
True
Want to learn more?¶
If you’re just getting started and looking for tutorial-style documentation, head on over to the User Guide. If you would prefer a comprehensive view of the tools tt provided, check out the autogenerated API docs:
