@@ -641,7 +641,7 @@ class RawDescriptionHelpFormatter(HelpFormatter):
     """
 
     def _fill_text(self, text, width, indent):
-        return ''.join([indent + line for line in text.splitlines(True)])
+        return ''.join(indent + line for line in text.splitlines(keepends=True))
 
 
 class RawTextHelpFormatter(RawDescriptionHelpFormatter):
 
@@ -484,7 +484,7 @@ def read(self, size=-1, chars=-1, firstline=False):
                 if firstline:
                     newchars, decodedbytes = \
                         self.decode(data[:exc.start], self.errors)
-                    lines = newchars.splitlines(True)
+                    lines = newchars.splitlines(keepends=True)
                     if len(lines)<=1:
                         raise
                 else:
@@ -526,7 +526,7 @@ def readline(self, size=None, keepends=True):
                 self.charbuffer = self.linebuffer[0]
                 self.linebuffer = None
             if not keepends:
-                line = line.splitlines(False)[0]
+                line = line.splitlines(keepends=False)[0]
             return line
 
         readsize = size or 72
@@ -543,7 +543,7 @@ def readline(self, size=None, keepends=True):
                     data += self.read(size=1, chars=1)
 
             line += data
-            lines = line.splitlines(True)
+            lines = line.splitlines(keepends=True)
             if lines:
                 if len(lines) > 1:
                     # More than one line result; the first line is a full line
@@ -559,10 +559,10 @@ def readline(self, size=None, keepends=True):
                         # only one remaining line, put it back into charbuffer
                         self.charbuffer = lines[0] + self.charbuffer
                     if not keepends:
-                        line = line.splitlines(False)[0]
+                        line = line.splitlines(keepends=False)[0]
                     break
                 line0withend = lines[0]
-                line0withoutend = lines[0].splitlines(False)[0]
+                line0withoutend = lines[0].splitlines(keepends=False)[0]
                 if line0withend != line0withoutend: # We really have a line end
                     # Put the rest back together and keep it until the next call
                     self.charbuffer = self._empty_charbuffer.join(lines[1:]) + \
@@ -575,7 +575,7 @@ def readline(self, size=None, keepends=True):
             # we didn't get anything or this was our only try
             if not data or size is not None:
                 if line and not keepends:
-                    line = line.splitlines(False)[0]
+                    line = line.splitlines(keepends=False)[0]
                 break
             if readsize < 8000:
                 readsize *= 2
@@ -803,7 +803,7 @@ def readlines(self, sizehint=None):
 
         data = self.reader.read()
         data, bytesencoded = self.encode(data, self.errors)
-        return data.splitlines(1)
+        return data.splitlines(keepends=True)
 
     def __next__(self):
 
 
@@ -1045,7 +1045,7 @@ def split(self, sep=None, maxsplit=-1):
         return self.data.split(sep, maxsplit)
     def rsplit(self, sep=None, maxsplit=-1):
         return self.data.rsplit(sep, maxsplit)
-    def splitlines(self, keepends=0): return self.data.splitlines(keepends)
+    def splitlines(self, keepends=False): return self.data.splitlines(keepends)
     def startswith(self, prefix, start=0, end=_sys.maxsize):
         return self.data.startswith(prefix, start, end)
     def strip(self, chars=None): return self.__class__(self.data.strip(chars))
 
@@ -800,7 +800,7 @@ class Differ:
     ...   2. Explicit is better than implicit.
     ...   3. Simple is better than complex.
     ...   4. Complex is better than complicated.
-    ... '''.splitlines(1)
+    ... '''.splitlines(keepends=True)
     >>> len(text1)
     4
     >>> text1[0][-1]
@@ -809,7 +809,7 @@ class Differ:
     ...   3.   Simple is better than complex.
     ...   4. Complicated is better than complex.
     ...   5. Flat is better than nested.
-    ... '''.splitlines(1)
+    ... '''.splitlines(keepends=True)
 
     Next we instantiate a Differ object:
 
@@ -896,8 +896,8 @@ def compare(self, a, b):
 
         Example:
 
-        >>> print(''.join(Differ().compare('one\ntwo\nthree\n'.splitlines(1),
-        ...                                'ore\ntree\nemu\n'.splitlines(1))),
+        >>> print(''.join(Differ().compare('one\ntwo\nthree\n'.splitlines(True),
+        ...                                'ore\ntree\nemu\n'.splitlines(True))),
         ...       end="")
         - one
         ?  ^
@@ -1269,8 +1269,8 @@ def context_diff(a, b, fromfile='', tofile='',
 
     Example:
 
-    >>> print(''.join(context_diff('one\ntwo\nthree\nfour\n'.splitlines(1),
-    ...       'zero\none\ntree\nfour\n'.splitlines(1), 'Original', 'Current')),
+    >>> print(''.join(context_diff('one\ntwo\nthree\nfour\n'.splitlines(True),
+    ...       'zero\none\ntree\nfour\n'.splitlines(True), 'Original', 'Current')),
     ...       end="")
     *** Original
     --- Current
@@ -1339,8 +1339,8 @@ def ndiff(a, b, linejunk=None, charjunk=IS_CHARACTER_JUNK):
 
     Example:
 
-    >>> diff = ndiff('one\ntwo\nthree\n'.splitlines(1),
-    ...              'ore\ntree\nemu\n'.splitlines(1))
+    >>> diff = ndiff('one\ntwo\nthree\n'.splitlines(keepends=True),
+    ...              'ore\ntree\nemu\n'.splitlines(keepends=True))
     >>> print(''.join(diff), end="")
     - one
     ?  ^
@@ -2034,8 +2034,8 @@ def restore(delta, which):
 
     Examples:
 
-    >>> diff = ndiff('one\ntwo\nthree\n'.splitlines(1),
-    ...              'ore\ntree\nemu\n'.splitlines(1))
+    >>> diff = ndiff('one\ntwo\nthree\n'.splitlines(keepends=True),
+    ...              'ore\ntree\nemu\n'.splitlines(keepends=True))
     >>> diff = list(diff)
     >>> print(''.join(restore(diff, 1)), end="")
     one
 
@@ -1332,7 +1332,7 @@ def __patched_linecache_getlines(self, filename, module_globals=None):
         m = self.__LINECACHE_FILENAME_RE.match(filename)
         if m and m.group('name') == self.test.name:
             example = self.test.examples[int(m.group('examplenum'))]
-            return example.source.splitlines(True)
+            return example.source.splitlines(keepends=True)
         else:
             return self.save_linecache_getlines(filename, module_globals)
 
@@ -1595,8 +1595,8 @@ def output_difference(self, example, got, optionflags):
         # Check if we should use diff.
         if self._do_a_fancy_diff(want, got, optionflags):
             # Split want & got into lines.
-            want_lines = want.splitlines(True)  # True == keep line ends
-            got_lines = got.splitlines(True)
+            want_lines = want.splitlines(keepends=True)
+            got_lines = got.splitlines(keepends=True)
             # Use difflib to find their differences.
             if optionflags & REPORT_UDIFF:
                 diff = difflib.unified_diff(want_lines, got_lines, n=2)
 
@@ -560,7 +560,7 @@ def refactor_docstring(self, input, filename):
         block_lineno = None
         indent = None
         lineno = 0
-        for line in input.splitlines(True):
+        for line in input.splitlines(keepends=True):
             lineno += 1
             if line.lstrip().startswith(self.PS1):
                 if block is not None:
@@ -604,7 +604,7 @@ def refactor_doctest(self, block, lineno, indent, filename):
                            filename, lineno, err.__class__.__name__, err)
             return block
         if self.refactor_tree(tree, filename):
-            new = str(tree).splitlines(True)
+            new = str(tree).splitlines(keepends=True)
             # Undo the adjustment of the line numbers in wrap_toks() below.
             clipped, new = new[:lineno-1], new[lineno-1:]
             assert clipped == ["\n"] * (lineno-1), clipped
 
@@ -84,7 +84,7 @@ def __init__(self, template):
 
     def _invalid(self, mo):
         i = mo.start('invalid')
-        lines = self.template[:i].splitlines(True)
+        lines = self.template[:i].splitlines(keepends=True)
         if not lines:
             colno = 1
             lineno = 1
 
@@ -177,7 +177,7 @@ def neitherspacenordigit(c):
             return not c.isspace() and not c.isdigit()
 
         lines = []
-        for line in s.splitlines(False):
+        for line in s.splitlines(keepends=False):
             # Drop texts, as they are locale dependent
             if line and not filter(neitherspacenordigit, line):
                 lines.append(line)
 
@@ -38,7 +38,7 @@ def _msgobj(self, filename):
             return email.message_from_file(fp)
 
     def _bytes_repr(self, b):
-        return [repr(x) for x in b.splitlines(True)]
+        return [repr(x) for x in b.splitlines(keepends=True)]
 
     def assertBytesEqual(self, first, second, msg):
         """Our byte strings are really encoded strings; improve diff output"""
 
@@ -139,7 +139,7 @@ def test_buffered_reader(self):
             with io.BufferedReader(f) as r:
                 lines = [line for line in r]
 
-        self.assertEqual(lines, 50 * data1.splitlines(True))
+        self.assertEqual(lines, 50 * data1.splitlines(keepends=True))
 
     def test_readline(self):
         self.test_write()
@@ -340,7 +340,7 @@ def sizes():
 
     def test_textio_readlines(self):
         # Issue #10791: TextIOWrapper.readlines() fails when wrapping GzipFile.
-        lines = (data1 * 50).decode("ascii").splitlines(True)
+        lines = (data1 * 50).decode("ascii").splitlines(keepends=True)
         self.test_write()
         with gzip.GzipFile(self.filename, 'r') as f:
             with io.TextIOWrapper(f, encoding="ascii") as t: