def print_list(value: list[str]) -> None:
    print(value)


existing_list = ["foo"]
print_list(
    existing_list
    + [
        "bar",
    ],
)

  --> test.py:7:5
   |
 5 |   existing_list = ["foo"]
 6 |   print_list(
 7 | /     existing_list
 8 | |     + [
 9 | |         "bar",
10 | |     ],
   | |_____^ Expected `list[str]`, found `list[_T]`
11 |   )
   |
info: Function defined here
 --> test.py:1:5
  |
1 | def print_list(value: list[str]) -> None:
  |     ^^^^^^^^^^ ---------------- Parameter declared here
2 |     print(value)
  |
info: `invalid-argument-type` is enabled by default

Found 1 diagnostic