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---
source: crates/ruff_python_parser/src/lexer.rs
expression: lex_source(source)
---
## Tokens
```
[
(
FStringStart,
0..2,
TokenFlags(
DOUBLE_QUOTES | F_STRING,
),
),
(
FStringEnd,
2..3,
TokenFlags(
DOUBLE_QUOTES | F_STRING,
),
),
(
String(
"",
),
4..6,
TokenFlags(
DOUBLE_QUOTES,
),
),
(
FStringStart,
7..9,
TokenFlags(
DOUBLE_QUOTES | F_STRING,
),
),
(
FStringEnd,
9..10,
TokenFlags(
DOUBLE_QUOTES | F_STRING,
),
),
(
FStringStart,
11..13,
TokenFlags(
F_STRING,
),
),
(
FStringEnd,
13..14,
TokenFlags(
F_STRING,
),
),
(
String(
"",
),
15..17,
),
(
FStringStart,
18..22,
TokenFlags(
DOUBLE_QUOTES | TRIPLE_QUOTED_STRING | F_STRING,
),
),
(
FStringEnd,
22..25,
TokenFlags(
DOUBLE_QUOTES | TRIPLE_QUOTED_STRING | F_STRING,
),
),
(
FStringStart,
26..30,
TokenFlags(
TRIPLE_QUOTED_STRING | F_STRING,
),
),
(
FStringEnd,
30..33,
TokenFlags(
TRIPLE_QUOTED_STRING | F_STRING,
),
),
(
Newline,
33..33,
),
]
```