Template's t syntax is abnormal.

[yunhai-dev]

Bug report

Bug description:

a = 'tom'
tp = t'hello world! {a}'
tp2 = t'hello world! {'tom'}'
print(tp)
print(tp2)

In the current form, the variable a inside the braces and the literal 'tom' are both strings with the same content, but in actual use a problem occurs. The printed result is as follows:

Template(strings=('hello world! ', ''), interpolations=(Interpolation('tom', 'a', None, ''),))
Template(strings=('hello world! ', ''), interpolations=(Interpolation('tom', "'tom'", None, ''),))

I think this is a highly counterintuitive (very user-unfriendly) issue: it treats the quotation marks as part of the content and includes them in the expression.

CPython versions tested on:

3.14

Operating systems tested on:

macOS

[StanFromIreland]

cc @davepeck @lysnikolaou @pauleveritt

[TeamSpen210]

This is correct behaviour - Interpolation objects are created with several attributes to allow for multiple use cases. The first is the value the expression evaluated to which is the same for both of these. But the second is the expression attribute, containing a copy of the source code for that part of the t-string.

[yunhai-dev]

This is correct behaviour - Interpolation objects are created with several attributes to allow for multiple use cases. The first is the value the expression evaluated to which is the same for both of these. But the second is the expression attribute, containing a copy of the source code for that part of the t-string.

I understand, thank you for your reply. This was my oversight, I will close this issue.