Boolean data type has two possible truth values to represent logic.
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Here is my implementation of digital logic gates in software. That includes the basic gates not_, and_, or_, xor; their complements nand, nor, xnor; and 2 propositional logic (taught in discrete mathematics) gates imply, eq; and their complements nimply, neq. There is also a multiplexer, called select, and a True counter, called count. count can help you make custom gates, such as an alternate concept of xnor which returns True only if all inputs are the same (standard xnor returns True if even inputs are True). All of them can handle upto 8 inputs.

parse is influenced by "boolean" package, and is quite good at translating str to bool. It can also handle double negatives, eg. not inactive. You know the and_ of 2-inputs, but what of 1-input? What of 0? And what of the other gates? I answer them here.

Stability: Experimental.

from extra_boolean import *


parse("1")
parse("truthy")
parse("Not Off")
parse("Not Inactive")
# True

parse("cold")
parse("inactive")
parse("Negative Yes")
parse("Negative Aye")
# False

imply(True, False)
# False

eq(False, False)
# True

xor(True, True, True)
# True

select(1, True, False, True)
# False           ^

count(True, False, True)
# 2    ^            ^

Index

Function	Action
parse	Converts string to boolean.
not_	Checks if value is false.
and_	Checks if all values are true.
or_	Checks if any value is true.
xor	Checks if odd no. of values are true.
nand	Checks if any value is false.
nor	Checks if all values are false.
xnor	Checks if even no. of values are true.
eq	Checks if antecedent ⇔ consequent (a ⇔ b).
neq	Checks if antecedent ⇎ consequent (a ⇎ b).
imply	Checks if antecedent ⇒ consequent (a ⇒ b).
nimply	Checks if antecedent ⇏ consequent (a ⇏ b).
select	Checks if ith value is true.
count	Counts no. of true values.

References

• How to Build Your Very First Python Package
• Test Python package publishing with the Test Python Package Index
• How to use setup.py to install dependencies only?
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• What does the “-U” option stand for in pip install -U
• Getting Started With Testing in Python
• Import parent directory for brief tests
• pytest: Most useful command-line options
• How to do relative imports in Python?
• How do I use a keyword as a variable name?
• pdoc: Auto-generate API documentation for Python projects
• Docstrings in Python
• PEP 257 -- Docstring Conventions
• PEP 8 -- Style Guide for Python Code
• Twine is asking for my password each time : how to use the .pypirc
• TravisCI: Building Pull Requests
• TravisCI: Building a Python Project
• Creating a clean gh-pages branch
• How to show only next line after the matched one?
• How To Check If a Directory Exists In a Shell Script
• How do I trim leading and trailing whitespace from each line of some output?
• Bash if..else Statement