py-linq 1.2.1

Linq for Python

py-linq

LINQ (Language Integrated Query) is a popular querying language available in .NET. This library ports the language so that developers can query collections of objects using the same syntax. This library would be useful for Python developers with experience using the expressiveness and power of LINQ.

Install

Available as a package from PyPI.

pip install py-linq

Usage

To access the LINQ functions an iterable needs to be wrapped by the Enumerable

from py_linq import Enumerable
my_collection = Enumerable([1,2,3])

Documentation

Please visit the project site for better documentation

Authors

Bruce Fenske

Contributors

1. Oleg Shilo
2. Sebastien Celles
3. Daniel Goltz

History

Date	Version	Description
TBD	1.2.1	Issue #36 - Fixed iterating over files
24-Nov-2019	1.2.0	Memory consumption improvements by removal of data caching when collection is iterated over Issue #22 - Unexpected behaviour when using iterator as input data Issue #34 - Data loss when using any function Issue #35 - Unexpected result when using first function
7-Oct-2019	1.1.0	Issue #23 - Any accepts a None predicate Issue #24 - Performance improvement where any returns on first matching element Issue #25 - Use of any to check for elements in an Enumerable Issue #26 - Performance improvement where element_at only iterates until the n-th element Issue #29 - Performance improvement where distinct method is no longer immediately executing. Issue #30 - Performance improvement where all function is no longer iterating through collection more than once Issue #31 - Performance improvement where reverse function is no longer immediately executing Issue #32 - Count function now accepts a lambda predicate to filter collection
16-Jul-2019	1.0.1	Issue #21 - Support lambda predicates in first, first_or_default, last, and last_or_default methods
07-Mar-2019	1.0	Issue #17 - Added additional LINQ methods to complete the Enumerable API as per MSDN
06-Jan-2019	0.7	Issue #19 - Distinct bug fix
06-Dec-2018	0.6	Issue #13 - Empty list as default parameter Issue #14 - except_ method bug fix
19-Jul-2017	0.5	last and last_or_default method bug fixes then_by and then_by_descending implementation
30-Jan-2017	0.4	Added Python 3 support
15-Jan-2015	0.3	Changed README.rst Performance improvements
12-Jan-2015	0.2	Added documentation
07-Jan-2015	0.1	Initial beta release