Examples for bad-exception-context (#6026)

Co-authored-by: Vladyslav Krylasov <vladyslav.krylasov@gmail.com>
Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>

Author: 3 people

doc/data/messages/b/bad-exception-context/bad.py

@@ -0,0 +1,7 @@
+def divide(x, y):
+    result = 0
+    try:
+        result = x / y
+    except ZeroDivisionError:
+        raise ValueError(f"Division by zero when dividing {x} by {y} !") from result  # [bad-exception-context]
+    return result

doc/data/messages/b/bad-exception-context/good.py

@@ -0,0 +1,7 @@
+def divide(x, y):
+    result = 0
+    try:
+        result = x / y
+    except ZeroDivisionError as exc:
+        raise ValueError(f"Division by zero when dividing {x} by {y} !") from exc
+    return result

doc/data/messages/b/bad-exception-context/related.rst

@@ -0,0 +1,2 @@
+- `The raise statement <https://docs.python.org/3/reference/simple_stmts.html#the-raise-statement>`_
+- `Explicit Exception Chaining <https://peps.python.org/pep-3134/#explicit-exception-chaining>`_ per PEP 3134