1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
---
source: crates/ruff_python_parser/tests/fixtures.rs
input_file: crates/ruff_python_parser/resources/inline/err/f_string_missing_conversion_flag.py
---
## AST
```
Module(
ModModule {
node_index: NodeIndex(None),
range: 0..18,
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 0..7,
value: FString(
ExprFString {
node_index: NodeIndex(None),
range: 0..7,
value: FStringValue {
inner: Single(
FString {
range: 0..7,
node_index: NodeIndex(None),
elements: [
Interpolation(
InterpolatedElement {
range: 2..6,
node_index: NodeIndex(None),
expression: Name(
ExprName {
node_index: NodeIndex(None),
range: 3..4,
id: Name("x"),
ctx: Load,
},
),
debug_text: None,
conversion: None,
format_spec: None,
runtime_str: None,
runtime_interpolation_format_spec: None,
runtime_formatted_value_format_spec: None,
},
),
],
flags: FStringFlags {
quote_style: Double,
prefix: Regular,
triple_quoted: false,
unclosed: false,
},
},
),
},
runtime_joined_str: None,
runtime_values: None,
},
),
},
),
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 8..17,
value: FString(
ExprFString {
node_index: NodeIndex(None),
range: 8..17,
value: FStringValue {
inner: Single(
FString {
range: 8..17,
node_index: NodeIndex(None),
elements: [
Interpolation(
InterpolatedElement {
range: 10..16,
node_index: NodeIndex(None),
expression: Name(
ExprName {
node_index: NodeIndex(None),
range: 11..12,
id: Name("x"),
ctx: Load,
},
),
debug_text: Some(
DebugText {
leading: "",
expression: "x",
trailing: "=",
},
),
conversion: None,
format_spec: Some(
InterpolatedStringFormatSpec {
range: 15..15,
node_index: NodeIndex(None),
elements: [],
},
),
runtime_str: None,
runtime_interpolation_format_spec: None,
runtime_formatted_value_format_spec: None,
},
),
],
flags: FStringFlags {
quote_style: Double,
prefix: Regular,
triple_quoted: false,
unclosed: false,
},
},
),
},
runtime_joined_str: None,
runtime_values: None,
},
),
},
),
],
runtime_body: None,
},
)
```
## Errors
|
1 | f"{x!}"
| ^ Syntax Error: f-string: missing conversion character
2 | f"{x=!:}"
|
|
1 | f"{x!}"
2 | f"{x=!:}"
| ^ Syntax Error: f-string: missing conversion character