def _get_imported_module(self, importnode, modname):
try:
return importnode.do_import_module(modname)
except astroid.TooManyLevelsError:
if _ignore_import_failure(importnode, modname,
self._ignored_modules):
return None
self.add_message("relative-beyond-top-level", node=importnode)
except astroid.AstroidSyntaxError as exc:
message = f"Cannot import {modname!r} due to syntax error {str(exc.error)!r}" # pylint: disable=no-member; false positive
self.add_message("syntax-error",
line=importnode.lineno,
args=message)
except astroid.AstroidBuildingException:
if not self.linter.is_message_enabled("import-error"):
return None
if _ignore_import_failure(importnode, modname,
self._ignored_modules):
return None
if not self.config.analyse_fallback_blocks and is_from_fallback_block(
importnode):
return None
dotted_modname = get_import_name(importnode, modname)
self.add_message("import-error",
args=repr(dotted_modname),
node=importnode)
return None
def visit_importfrom(self, node: nodes.ImportFrom) -> None:
"""Triggered when a from statement is seen."""
basename = node.modname
basename = get_import_name(node, basename)
self.check_deprecated_module(node, basename)
class_names = (name for name, _ in node.names)
self.check_deprecated_class(node, basename, class_names)
def visit_importfrom(self, node: nodes.ImportFrom) -> None:
"""Triggered when a from statement is seen."""
basename = node.modname
imported_module = self._get_imported_module(node, basename)
absolute_name = get_import_name(node, basename)
self._check_import_as_rename(node)
self._check_misplaced_future(node)
self.check_deprecated_module(node, absolute_name)
self._check_preferred_module(node, basename)
self._check_wildcard_imports(node, imported_module)
self._check_same_line_imports(node)
self._check_reimport(node, basename=basename, level=node.level)
self._check_toplevel(node)
if isinstance(node.parent, nodes.Module):
# Allow imports nested
self._check_position(node)
if isinstance(node.scope(), nodes.Module):
self._record_import(node, imported_module)
if imported_module is None:
return
for name, _ in node.names:
if name != "*":
self._add_imported_module(node,
f"{imported_module.name}.{name}")
else:
self._add_imported_module(node, imported_module.name)