| """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) |
