| """Support for template string literals (t-strings).""" | |
| t = t"{0}" | |
| Template = type(t) | |
| Interpolation = type(t.interpolations[0]) | |
| del t | |
| def convert(obj, /, conversion): | |
| """Convert *obj* using formatted string literal semantics.""" | |
| if conversion is None: | |
| return obj | |
| if conversion == 'r': | |
| return repr(obj) | |
| if conversion == 's': | |
| return str(obj) | |
| if conversion == 'a': | |
| return ascii(obj) | |
| raise ValueError(f'invalid conversion specifier: {conversion}') | |
| def _template_unpickle(*args): | |
| import itertools | |
| if len(args) != 2: | |
| raise ValueError('Template expects tuple of length 2 to unpickle') | |
| strings, interpolations = args | |
| parts = [] | |
| for string, interpolation in itertools.zip_longest(strings, interpolations): | |
| if string is not None: | |
| parts.append(string) | |
| if interpolation is not None: | |
| parts.append(interpolation) | |
| return Template(*parts) | |