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

從 issue 中描述的 string.templatelib.Template 的 repr 行為開始，並將其與遍歷 template 物件進行比較。驗證 repr 是否依迭代順序輸出 Template 部分，並與提議的建構函式呼叫格式相符；gh-151104 已關聯，因此在開始之前先審查該工作。