bpo-37444: Update differing exception between builtins and importlib (GH-14869)

Imports now raise `TypeError` instead of `ValueError` for relative import failures. This makes things consistent between `builtins.__import__` and `importlib.__import__` as well as using a more natural import for the failure.


https://bugs.python.org/issue37444



Automerge-Triggered-By: @brettcannon

2 files changed, 3 insertions, 3 deletions

diff --git a/Lib/importlib/_bootstrap.py b/Lib/importlib/_bootstrap.py
index 32deef1..5e2f520 100644
--- a/Lib/importlib/_bootstrap.py
+++ b/Lib/importlib/_bootstrap.py
@@ -873,7 +873,7 @@ def _resolve_name(name, package, level):
     """Resolve a relative module name to an absolute one."""
     bits = package.rsplit('.', level - 1)
     if len(bits) < level:
-        raise ValueError('attempted relative import beyond top-level package')
+        raise ImportError('attempted relative import beyond top-level package')
     base = bits[0]
     return '{}.{}'.format(base, name) if name else base
 
diff --git a/Lib/importlib/util.py b/Lib/importlib/util.py
index 201e0f4..269a6fa 100644
--- a/Lib/importlib/util.py
+++ b/Lib/importlib/util.py
@@ -29,8 +29,8 @@ def resolve_name(name, package):
     if not name.startswith('.'):
         return name
     elif not package:
-        raise ValueError(f'no package specified for {repr(name)} '
-                         '(required for relative module names)')
+        raise ImportError(f'no package specified for {repr(name)} '
+                          '(required for relative module names)')
     level = 0
     for character in name:
         if character != '.':