Parses commonly used range notations to python objects
py-range-parse is a library to parse commonly used range notations to python objects that act like sets.
py-range-parse is used by
and hopefully many others :)
How to use
pip install py-range-parse
from py_range_parse import parse_range range = parse_range("[0..5]")
or create on manually:
from py_range_parse import Range range = Range(0,5)
When parsing a
Range from a
str any whitespace is ignored.
If both the start and end value are of type
int, the resulting
Range will only consider integers as part of it. If you want to include
float values as well, at least one of the values has to be a
[-2 .. 5]
[10 .. 1]
If the end value is bigger than the start value the resulting range will automatically be inverted. Therefore
range.start <= range.end is always
True in a
Range includes every possible
float value between the start and end value.
[-2.2 .. 5.123]
[-2.0 .. 5]
Infinity can also be specified using both
inf as well as the unicode symbol
∞. Since it is internally represented using
math.inf it will behave like a
]-inf .. inf[
]-∞ .. ∞[
The start and end values can be excluded from the
Range independent of one another using the open bracket notation.
]0 .. 5.5]
]0 .. inf[
You can easily check if a value is within a given
Range like this:
> from py_range_parse import parse_range > range = parse_range("[0 .. 5]") > print(4 in range) True
You can compare equality of two
Range instances using the
For two ranges to be equal they have to have the same
- start inclusion
- end inclusion
- type (
> from py_range_parse import parse_range > range1 = parse_range("[0 .. 5]") > range2 = parse_range("[0 .. 5]") > range3 = parse_range("[0 .. 5.0]") > print(range1 == range2) True > print(range1 == range3) False
GitHub is for social coding: if you want to write code, I encourage contributions through pull requests from forks of this repository. Create GitHub tickets for bugs and new features and comment on the ones that you are interested in.
py-range-parse Copyright (c) 2019 Markus Ressel Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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