From cee38f39dfb7eaca22eda3c19a4d81adc4097105 Mon Sep 17 00:00:00 2001
From: Sid <27780930+autinerd@users.noreply.github.com>
Date: Wed, 24 Apr 2024 17:56:11 +0200
Subject: [PATCH] [`flake8-blind-expect`] Allow raise from in `BLE001` (#11131)

## Summary

This allows `raise from` in BLE001.

```python
try:
    ...
except Exception as e:
    raise ValueError from e
```

Fixes #10806

## Test Plan

Test case added.
---
 .../test/fixtures/flake8_blind_except/BLE.py    |  5 +++++
 .../flake8_blind_except/rules/blind_except.rs   | 17 ++++++++++++-----
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_blind_except/BLE.py b/crates/ruff_linter/resources/test/fixtures/flake8_blind_except/BLE.py
index b2272b8ab591e..10cca835ccaff 100644
--- a/crates/ruff_linter/resources/test/fixtures/flake8_blind_except/BLE.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_blind_except/BLE.py
@@ -124,3 +124,8 @@
     pass
 except Exception:
     error("...", exc_info=True)
+
+try:
+    ...
+except Exception as e:
+    raise ValueError from e
diff --git a/crates/ruff_linter/src/rules/flake8_blind_except/rules/blind_except.rs b/crates/ruff_linter/src/rules/flake8_blind_except/rules/blind_except.rs
index 77c0899fc0abb..be2262c130f30 100644
--- a/crates/ruff_linter/src/rules/flake8_blind_except/rules/blind_except.rs
+++ b/crates/ruff_linter/src/rules/flake8_blind_except/rules/blind_except.rs
@@ -87,18 +87,25 @@ pub(crate) fn blind_except(
     if !matches!(builtin_exception_type, "BaseException" | "Exception") {
         return;
     }
-
     // If the exception is re-raised, don't flag an error.
     if body.iter().any(|stmt| {
-        if let Stmt::Raise(ast::StmtRaise { exc, .. }) = stmt {
-            if let Some(exc) = exc {
-                if let Expr::Name(ast::ExprName { id, .. }) = exc.as_ref() {
+        if let Stmt::Raise(ast::StmtRaise { exc, cause, .. }) = stmt {
+            if let Some(cause) = cause {
+                if let Expr::Name(ast::ExprName { id, .. }) = cause.as_ref() {
                     name.is_some_and(|name| id == name)
                 } else {
                     false
                 }
             } else {
-                true
+                if let Some(exc) = exc {
+                    if let Expr::Name(ast::ExprName { id, .. }) = exc.as_ref() {
+                        name.is_some_and(|name| id == name)
+                    } else {
+                        false
+                    }
+                } else {
+                    true
+                }
             }
         } else {
             false