This is a Python implementation of the Unicode Collation Algorithm (UCA). It passes 100% of the UCA conformance tests for Unicode 5.2.0 (Python 2.7), Unicode 6.3.0 (Python 3.3+), Unicode 8.0.0 (Python 3.5+), Unicode 9.0.0 (Python 3.6+), and Unicode 10.0.0 (Python 3.7+) with a variable-weighting setting of Non-ignorable.