Fix the last IndentationError.

parso/python/normalizer.py

@@ -48,7 +48,12 @@ class ErrorFinder(Normalizer):
     def visit_node(self, node):
         if node.type == 'error_node':
             leaf = node.get_next_leaf()
-            self._add_syntax_error("invalid syntax", leaf)
+            if node.children[-1].type == 'newline':
+                # This is the beginning of a suite that is not indented.
+                spacing = list(leaf._split_prefix())[-1]
+                self._add_indentation_error('expected an indented block', spacing)
+            else:
+                self._add_syntax_error("invalid syntax", leaf)
         elif node.type in _BLOCK_STMTS:
             with self._context.add_block(node):
                 if len(self._context.blocks) == _MAX_BLOCK_SIZE:

test/normalizer_issue_files/E27.py

@@ -22,7 +22,7 @@ True  and False
 if   1:
     pass
 # Syntax Error, no indentation
-#: E901+1
+#: E903+1
 if   1:
 pass
 #: E223:8

test/test_python_errors.py

@@ -48,6 +48,7 @@ def test_syntax_errors(code, positions):
         (' 1', [(1, 0)]),
         ('def x():\n    1\n 2', [(3, 0)]),
         ('def x():\n 1\n  2', [(3, 0)]),
+        ('def x():\n1', [(2, 0)]),
     ]
 )
 def test_indentation_errors(code, positions):
@@ -63,6 +64,7 @@ def test_indentation_errors(code, positions):
         ' foo',
         'def x():\n    1\n 2',
         'def x():\n 1\n  2',
+        'if 1:\nfoo',
     ]
 )
 def test_python_exception_matches(code):