rbool 0.0.4

1D boolean operations

Unibool

A python package for unidimensional boolean operations

Simple example

>>> from rbool import *
>>> interval = Interval(-10, 5)  # Create a closed interval
>>> interval
[-10, 5]
>>> interval | (3, 8)  # Unite with open interval
[-10, 8)
>>> ~interval  # Complementar of the interval
(-inf, 10) U (5, inf)
>>> interval |= {-2, 6, 10}  # Unite with single values
>>> interval
[-10, 5] U {6, 10}
>>> interval - {2, 3}  # Remove single values from interval
[-10, 2) U (2, 3) U (3, 5] U {6, 10}
>>> [-8, 3] in interval  # Checks if [-8, 3] is inside the interval
True

The usual operations happens between two subsets:

• A | B: union
• A & B: intersection
• ~A: complementar
• A ^ B: XOR
• A - B: subtract
• A in B: is subset ?

Useful functions

>>> minimum("[-3, 10]")  # Gets the minimum value from subset
-3
>>> minimum("(-3, 10]")  # Returns None, there's no minimum
>>> infimum("(-3, 10]")  # Gets the infimum value from subset
-3
>>> maximum("(-3, 10]")  # Gets the maximum value
10
>>> supremum("(-3, 10]")
10
>>> lower(5)  # All values on real line less than 5
(-inf, 5]
>>> {-15, 0} in lower(5)  # -15 and 0 are inside (-inf, 5] ?
True
>>> [-3, 6] in bigger(5)  # interval [-3, 6] is inside [5, inf) ?
False
>>> scale("[-3, 10) U {15}", 2)  # Maps each value 'x' to '2*x'
[-6, 20) U {30}
>>> move("[-3, 10) U {15}", -8)  # Maps each value 'x' to 'x - 8'
[-8, 2) U {7}

Installation:

This library is available in PyPI. To install it

$ pip install rbool

For more details, refer to the documentation

Documentation

The documentation can be found at rbool.readthedocs.io

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