Python*slices* are implemented via c++`operator()` as declared and defined in the templated class`pcs::CppStringT<>`. Python slices have next specific notation:`[start : stop : step]` and allow the running step by step through range[start, stop) (notice: stop is excluded from the range). Operator`(start, stop, step)` acts the same way while running through the content of pythonic c++ strings. A dedicated base class`Slice` is also provided and can be passed as argument to`operator()`. It is derived in many simpler slices classes, since Python slices may not define either`start`,`stop` or`step` which then get default values (resp. 0,*end-of-sequence*, and 1).

Notice: Python 3.14 (released by Oct. 2025) implements Template Strings (T-Strings), see[string.templatelib — Support for template string literals](https://docs.python.org/3/library/string.templatelib.html) in Python 3.14 documentation and[PEP 750](https://peps.python.org/pep-0750/) for full explanations. Meanwhile, T-strings are not implemented in CppStrings library: the templates concept is already available in c++ language. The "translation" of T-Strings into CppStrings library is then left as an (easy) exercice to the user.

Python strings are based on Unicode chars. This is currently not the case for pythonic c++ strings in**cpp-strings**.