Better `repr` for `string.templatelib.Template`.

Feature or enhancement

Proposal:

Currently the repr output for template strings shows how the data is stored internally, but this is not how the template could be reconstructed via an constructor call and the format is unintuitive since the template parts are not output in the order they appear in the template source. The repr result should output the parts in the order as iterating over the template object does, i.e.

x = 1
y = 2
print(repr(t'{x} + {y}'))

should print

Template(Interpolation(1, 'x', None, ''), ' + ', Interpolation(2, 'y', None, ''))

instead of

Template(strings=('', ' + ', ''), interpolations=(Interpolation(1, 'x', None, ''), Interpolation(2, 'y', None, '')))

This has already been discussed at https://discuss.python.org/t/repr-output-of-t-strings/107653

I'm working on a patch/pull request.

Has this already been discussed elsewhere?

I have already discussed this feature proposal on Discourse

Links to previous discussion of this feature:

https://discuss.python.org/t/repr-output-of-t-strings/107653

Linked PRs

• gh-151104

从 issue 中描述的 string.templatelib.Template 的 repr 行为开始，并将其与遍历 template 对象进行比较。验证 repr 是否按迭代顺序输出 Template 部分，并与提议的构造函数调用格式匹配；gh-151104 已关联，因此在开始之前先审查该工作。