Make an internal function public, because it was used outside of the defining module.

parso/python/__init__.py

@@ -6,7 +6,7 @@ import os
 from parso.utils import splitlines, source_to_unicode
 from parso._compatibility import FileNotFoundError
 from parso.pgen2.pgen import generate_grammar
-from parso.python.parser import Parser, _remove_last_newline
+from parso.python.parser import Parser, remove_last_newline
 from parso.python.diff import DiffParser
 from parso.tokenize import generate_tokens
 from parso.cache import parser_cache, load_module, save_module
@@ -136,7 +136,7 @@ def parse(code=None, **kwargs):
     p = Parser(grammar, error_recovery=error_recovery, start_symbol=start_symbol)
     root_node = p.parse(tokens=tokens)
     if added_newline:
-        _remove_last_newline(root_node)
+        remove_last_newline(root_node)
 
     if cache or diff_cache:
         save_module(grammar, path, root_node, lines, pickling=cache,

parso/python/diff.py

@@ -11,7 +11,7 @@ from collections import namedtuple
 import logging
 
 from parso.utils import splitlines
-from parso.python.parser import Parser, _remove_last_newline
+from parso.python.parser import Parser, remove_last_newline
 from parso.python.tree import EndMarker
 from parso.tokenize import (generate_tokens, NEWLINE, TokenInfo,
                             ENDMARKER, INDENT, DEDENT)
@@ -160,7 +160,7 @@ class DiffParser(object):
         self._nodes_stack.close()
 
         if self._added_newline:
-            _remove_last_newline(self._module)
+            remove_last_newline(self._module)
 
         last_pos = self._module.end_pos[0]
         if last_pos != line_length:

parso/python/parser.py

@@ -195,7 +195,7 @@ class Parser(BaseParser):
             yield typ, value, start_pos, prefix
 
 
-def _remove_last_newline(node):
+def remove_last_newline(node):
     endmarker = node.children[-1]
     # The newline is either in the endmarker as a prefix or the previous
     # leaf as a newline token.