Add function name to B008 message

README.md

@@ -515,7 +515,7 @@ For more, see [flake8-bugbear](https://pypi.org/project/flake8-bugbear/22.10.27/
 | B005 | StripWithMultiCharacters | Using `.strip()` with multi-character strings is misleading the reader. |  |
 | B006 | MutableArgumentDefault | Do not use mutable data structures for argument defaults. |  |
 | B007 | UnusedLoopControlVariable | Loop control variable `i` not used within the loop body. | 🛠 |
-| B008 | FunctionCallArgumentDefault | Do not perform function calls in argument defaults. |  |
+| B008 | FunctionCallArgumentDefault | Do not perform function call in argument defaults |  |
 | B009 | GetAttrWithConstant | Do not call `getattr` with a constant attribute value, it is not any safer than normal property access. | 🛠 |
 | B010 | SetAttrWithConstant | Do not call `setattr` with a constant attribute value, it is not any safer than normal property access. |  |
 | B011 | DoNotAssertFalse | Do not `assert False` (`python -O` removes these calls), raise `AssertionError()` | 🛠 |

src/checks.rs

@@ -382,7 +382,7 @@ pub enum CheckKind {
     StripWithMultiCharacters,
     MutableArgumentDefault,
     UnusedLoopControlVariable(String),
-    FunctionCallArgumentDefault,
+    FunctionCallArgumentDefault(Option<String>),
     GetAttrWithConstant,
     SetAttrWithConstant,
     DoNotAssertFalse,
@@ -619,7 +619,7 @@ impl CheckCode {
             CheckCode::B005 => CheckKind::StripWithMultiCharacters,
             CheckCode::B006 => CheckKind::MutableArgumentDefault,
             CheckCode::B007 => CheckKind::UnusedLoopControlVariable("i".to_string()),
-            CheckCode::B008 => CheckKind::FunctionCallArgumentDefault,
+            CheckCode::B008 => CheckKind::FunctionCallArgumentDefault(None),
             CheckCode::B009 => CheckKind::GetAttrWithConstant,
             CheckCode::B010 => CheckKind::SetAttrWithConstant,
             CheckCode::B011 => CheckKind::DoNotAssertFalse,
@@ -1064,7 +1064,7 @@ impl CheckKind {
             CheckKind::StripWithMultiCharacters => &CheckCode::B005,
             CheckKind::MutableArgumentDefault => &CheckCode::B006,
             CheckKind::UnusedLoopControlVariable(_) => &CheckCode::B007,
-            CheckKind::FunctionCallArgumentDefault => &CheckCode::B008,
+            CheckKind::FunctionCallArgumentDefault(_) => &CheckCode::B008,
             CheckKind::GetAttrWithConstant => &CheckCode::B009,
             CheckKind::SetAttrWithConstant => &CheckCode::B010,
             CheckKind::DoNotAssertFalse => &CheckCode::B011,
@@ -1389,8 +1389,12 @@ impl CheckKind {
                 "Loop control variable `{name}` not used within the loop body. If this is \
                  intended, start the name with an underscore."
             ),
-            CheckKind::FunctionCallArgumentDefault => {
+            CheckKind::FunctionCallArgumentDefault(name) => {
-                "Do not perform function calls in argument defaults.".to_string()
+                if let Some(name) = name {
+                    format!("Do not perform function call `{name}` in argument defaults")
+                } else {
+                    "Do not perform function call in argument defaults".to_string()
+                }
             }
             CheckKind::GetAttrWithConstant => "Do not call `getattr` with a constant attribute \
                                                value, it is not any safer than normal property \

src/flake8_bugbear/plugins/function_call_argument_default.rs

@@ -75,7 +75,7 @@ where
                     && !is_nan_or_infinity(func, args)
                 {
                     self.checks.push((
-                        CheckKind::FunctionCallArgumentDefault,
+                        CheckKind::FunctionCallArgumentDefault(compose_call_path(expr)),
                         Range::from_located(expr),
                     ))
                 }

src/flake8_bugbear/snapshots/ruff__flake8_bugbear__tests__extend_immutable_calls.snap

@@ -2,7 +2,8 @@
 source: src/flake8_bugbear/mod.rs
 expression: checks
 ---
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: Depends
   location:
     row: 19
     column: 50

src/snapshots/ruff__linter__tests__B008_B006_B008.py.snap

@@ -2,7 +2,8 @@
 source: src/linter.rs
 expression: checks
 ---
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: range
   location:
     row: 85
     column: 60
@@ -10,7 +11,8 @@ expression: checks
     row: 85
     column: 68
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: range
   location:
     row: 89
     column: 63
@@ -18,7 +20,8 @@ expression: checks
     row: 89
     column: 71
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: range
   location:
     row: 93
     column: 59
@@ -26,7 +29,8 @@ expression: checks
     row: 93
     column: 67
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: time.time
   location:
     row: 109
     column: 38
@@ -34,7 +38,8 @@ expression: checks
     row: 109
     column: 49
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: dt.datetime.now
   location:
     row: 113
     column: 11
@@ -42,7 +47,8 @@ expression: checks
     row: 113
     column: 28
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: dt.timedelta
   location:
     row: 113
     column: 31
@@ -50,7 +56,8 @@ expression: checks
     row: 113
     column: 51
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: ~
   location:
     row: 117
     column: 29
@@ -58,7 +65,8 @@ expression: checks
     row: 117
     column: 44
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: float
   location:
     row: 155
     column: 33
@@ -66,7 +74,8 @@ expression: checks
     row: 155
     column: 47
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: float
   location:
     row: 160
     column: 29
@@ -74,7 +83,8 @@ expression: checks
     row: 160
     column: 37
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: float
   location:
     row: 164
     column: 44
@@ -82,7 +92,8 @@ expression: checks
     row: 164
     column: 57
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: float
   location:
     row: 170
     column: 20
@@ -90,7 +101,8 @@ expression: checks
     row: 170
     column: 28
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: dt.datetime.now
   location:
     row: 170
     column: 30
@@ -98,7 +110,8 @@ expression: checks
     row: 170
     column: 47
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: map
   location:
     row: 176
     column: 21
@@ -106,7 +119,8 @@ expression: checks
     row: 176
     column: 62
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: random.randint
   location:
     row: 181
     column: 18
@@ -114,7 +128,8 @@ expression: checks
     row: 181
     column: 59
   fix: ~
-- kind: FunctionCallArgumentDefault
+- kind:
+    FunctionCallArgumentDefault: dt.datetime.now
   location:
     row: 181
     column: 36