diff --git a/jedi/_compatibility.py b/jedi/_compatibility.py
index 595d530c..f78e2f18 100644
--- a/jedi/_compatibility.py
+++ b/jedi/_compatibility.py
@@ -18,8 +18,6 @@ from zipimport import zipimporter
 
 from jedi.file_io import KnownContentFileIO, ZipFileIO
 
-is_py3 = sys.version_info[0] >= 3
-is_py35 = is_py3 and sys.version_info[1] >= 5
 py_version = int(str(sys.version_info[0]) + str(sys.version_info[1]))
 
 
@@ -105,7 +103,7 @@ def _from_loader(loader, string):
     except AttributeError:
         raise ImportError("get_source was not defined on loader")
 
-    if is_py3 and f is not importlib.machinery.SourceFileLoader.get_source:
+    if f is not importlib.machinery.SourceFileLoader.get_source:
         # Unfortunately we are reading unicode here, not bytes.
         # It seems hard to get bytes, because the zip importer
         # logic just unpacks the zip file and returns a file descriptor
@@ -143,7 +141,7 @@ class ImplicitNSInfo(object):
         self.paths = paths
 
 
-if is_py3:
+if True:
     all_suffixes = importlib.machinery.all_suffixes
 else:
     def all_suffixes():
diff --git a/jedi/debug.py b/jedi/debug.py
index 753930e1..80673cce 100644
--- a/jedi/debug.py
+++ b/jedi/debug.py
@@ -2,7 +2,7 @@ import os
 import time
 from contextlib import contextmanager
 
-from jedi._compatibility import encoding, is_py3, u
+from jedi._compatibility import u
 
 _inited = False
 
@@ -135,9 +135,4 @@ def print_to_stdout(color, str_out):
     """
     col = getattr(Fore, color)
     _lazy_colorama_init()
-    if not is_py3:
-        str_out = str_out.encode(encoding, 'replace')
     print(col + str_out + Fore.RESET)
-
-
-# debug_function = print_to_stdout
diff --git a/test/run.py b/test/run.py
index a169b21b..244962d0 100755
--- a/test/run.py
+++ b/test/run.py
@@ -114,7 +114,7 @@ import pytest
 
 import jedi
 from jedi import debug
-from jedi._compatibility import unicode, is_py3
+from jedi._compatibility import unicode
 from jedi.api.classes import Name
 from jedi.api.completion import get_user_context
 from jedi import parser_utils
@@ -401,12 +401,8 @@ def collect_dir_tests(base_dir, test_files, check_thirdparty=False):
 
             path = os.path.join(base_dir, f_name)
 
-            if is_py3:
-                with open(path, encoding='utf-8', newline='') as f:
-                    source = f.read()
-            else:
-                with open(path) as f:
-                    source = unicode(f.read(), 'UTF-8')
+            with open(path, encoding='utf-8', newline='') as f:
+                source = f.read()
 
             for case in collect_file_tests(path, StringIO(source),
                                            lines_to_execute):
diff --git a/test/test_api/test_interpreter.py b/test/test_api/test_interpreter.py
index 54195717..652a87c9 100644
--- a/test/test_api/test_interpreter.py
+++ b/test/test_api/test_interpreter.py
@@ -7,7 +7,7 @@ import warnings
 import pytest
 
 import jedi
-from jedi._compatibility import is_py3, py_version
+from jedi._compatibility import py_version
 from jedi.inference.compiled import mixed
 from importlib import import_module
 
@@ -139,9 +139,7 @@ def test_complete_raw_module():
 def test_complete_raw_instance():
     import datetime
     dt = datetime.datetime(2013, 1, 1)
-    completions = ['time', 'timetz', 'timetuple']
-    if is_py3:
-        completions += ['timestamp']
+    completions = ['time', 'timetz', 'timetuple', 'timestamp']
     _assert_interpreter_complete('(dt - dt).ti', locals(), completions)
 
 
@@ -349,12 +347,10 @@ def test_keyword_argument():
     assert c.name == 'some_keyword_argument='
     assert c.complete == 'ord_argument='
 
-    # This needs inspect.signature to work.
-    if is_py3:
-        # Make it impossible for jedi to find the source of the function.
-        f.__name__ = 'xSOMETHING'
-        c, = jedi.Interpreter("x(some_keyw", [{'x': f}]).complete()
-        assert c.name == 'some_keyword_argument='
+    # Make it impossible for jedi to find the source of the function.
+    f.__name__ = 'xSOMETHING'
+    c, = jedi.Interpreter("x(some_keyw", [{'x': f}]).complete()
+    assert c.name == 'some_keyword_argument='
 
 
 def test_more_complex_instances():
@@ -403,16 +399,12 @@ def test_dir_magic_method(allow_unsafe_getattr):
             raise AttributeError(name)
 
         def __dir__(self):
-            if is_py3:
-                names = object.__dir__(self)
-            else:
-                names = dir(object())
-            return ['foo', 'bar'] + names
+            return ['foo', 'bar'] + object.__dir__(self)
 
     itp = jedi.Interpreter("ca.", [{'ca': CompleteAttrs()}])
     completions = itp.complete()
     names = [c.name for c in completions]
-    assert ('__dir__' in names) == is_py3
+    assert ('__dir__' in names) is True
     assert '__class__' in names
     assert 'foo' in names
     assert 'bar' in names
diff --git a/test/test_parso_integration/test_parser_utils.py b/test/test_parso_integration/test_parser_utils.py
index e513b875..dd128b78 100644
--- a/test/test_parso_integration/test_parser_utils.py
+++ b/test/test_parso_integration/test_parser_utils.py
@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-from jedi._compatibility import is_py3
 from jedi import parser_utils
 from parso import parse
 from parso.python import tree
@@ -55,10 +54,7 @@ def test_hex_values_in_docstring():
         '''
 
     doc = parser_utils.clean_scope_docstring(next(parse(source).iter_funcdefs()))
-    if is_py3:
-        assert doc == '\xff'
-    else:
-        assert doc == u'�'
+    assert doc == '\xff'
 
 
 @pytest.mark.parametrize(