New submission from Lysandros Nikolaou <[email protected]>:
When concatenating f-strings, if there is an expression in any STRING node
other than the first, col_offset of the parsed expression has a wrong value.
For example, parsing f"hello" f"{world}" outputs the following AST:
Module(
body=[
Expr(
value=JoinedStr(
values=[
Constant(
value="hello",
kind=None,
lineno=1,
col_offset=0,
end_lineno=1,
end_col_offset=19,
),
FormattedValue(
value=Name(
id="world",
ctx=Load(),
lineno=1,
*col_offset=1,*
end_lineno=1,
*end_col_offset=6,*
),
conversion=-1,
format_spec=None,
lineno=1,
col_offset=0,
end_lineno=1,
end_col_offset=19,
),
],
lineno=1,
col_offset=0,
end_lineno=1,
end_col_offset=19,
),
lineno=1,
col_offset=0,
end_lineno=1,
end_col_offset=19,
)
],
type_ignores=[],
)
Here, col_offset and end_col_offset are wrong in the parsed NAME 'world'.
----------
components: Interpreter Core
messages: 361456
nosy: gvanrossum, lys.nikolaou, pablogsal
priority: normal
severity: normal
status: open
title: Parsed expression has wrong line/col info when concatenating f-strings
versions: Python 3.7, Python 3.8, Python 3.9
_______________________________________
Python tracker <[email protected]>
<https://bugs.python.org/issue39564>
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