splitlines and source_to_unicode are utils of parso.

jedi/api/__init__.py

@@ -16,6 +16,8 @@ import sys
 from parso.python import load_grammar
 from parso.python import tree
 from parso.python import parse
+from parso.utils import source_to_unicode, splitlines
+
 from jedi.parser_utils import get_executable_nodes, get_statement_of_position
 from jedi import debug
 from jedi import settings
@@ -108,8 +110,8 @@ class Script(object):
             with open(path, 'rb') as f:
                 source = f.read()
 
-        self._source = common.source_to_unicode(source, encoding)
-        self._code_lines = common.splitlines(self._source)
+        self._source = source_to_unicode(source, encoding)
+        self._code_lines = splitlines(self._source)
         line = max(len(self._code_lines), 1) if line is None else line
         if not (0 < line <= len(self._code_lines)):
             raise ValueError('`line` parameter is not in a valid range.')

jedi/api/helpers.py

@@ -4,13 +4,14 @@ Helpers for the API
 import re
 from collections import namedtuple
 
-from jedi._compatibility import u
-from jedi.evaluate.helpers import evaluate_call_of_leaf
 from parso.python.parser import Parser
 from parso.python import tree
 from parso import tokenize
+from parso.utils import splitlines
+
+from jedi._compatibility import u
+from jedi.evaluate.helpers import evaluate_call_of_leaf
 from jedi.cache import time_cache
-from jedi import common
 
 
 CompletionParts = namedtuple('CompletionParts', ['path', 'has_dot', 'name'])
@@ -52,7 +53,7 @@ class OnErrorLeaf(Exception):
 
 
 def _is_on_comment(leaf, position):
-    comment_lines = common.splitlines(leaf.prefix)
+    comment_lines = splitlines(leaf.prefix)
     difference = leaf.start_pos[0] - position[0]
     prefix_start_pos = leaf.get_start_pos_of_prefix()
     if difference == 0: