diff --git a/README.rst b/README.rst
index 9ed17efe..83d077cb 100644
--- a/README.rst
+++ b/README.rst
@@ -75,6 +75,9 @@ Jedi really understands your Python code. For a comprehensive list what Jedi can
 do, see: https://jedi.readthedocs.org/en/latest/docs/features.html. A list of
 caveats can be found on the same page.
 
+You can run Jedi on cPython 2.6, 2.7, 3.2 or 3.3, but it should also
+understand/parse code older than those versions.
+
 Tips on how to use Jedi efficiently can be found here:
 https://jedi.readthedocs.org/en/latest/docs/recipes.html
 
@@ -102,14 +105,12 @@ The test suite depends on ``tox`` and ``pytest``::
 
 To run the tests for all supported Python versions::
 
-    PIP_INSECURE=t tox
+    tox
 
 If you want to test only a specific Python version (e.g. Python 2.7), it's as
 easy as ::
 
     tox -e py27
 
-The ``PIP_INSECURE=t`` env variable is only needed for the ``py25`` target.
-
 Tests are also run automatically on `Travis CI
 <https://travis-ci.org/davidhalter/jedi/>`_.
diff --git a/docs/docs/features.rst b/docs/docs/features.rst
index 6038e37e..a0674131 100644
--- a/docs/docs/features.rst
+++ b/docs/docs/features.rst
@@ -9,7 +9,7 @@ Features and Caveats
 General Features
 ----------------
 
-- python 2.5+ and 3.2+ support
+- python 2.6+ and 3.2+ support
 - ignores syntax errors and wrong indentation
 - can deal with complex module / function / class structures
 - virtualenv support
diff --git a/jedi/_compatibility.py b/jedi/_compatibility.py
index 43d149d8..e0252a7a 100644
--- a/jedi/_compatibility.py
+++ b/jedi/_compatibility.py
@@ -1,10 +1,7 @@
 """
-To ensure compatibility from Python ``2.5`` - ``3.2``, a module has been
+To ensure compatibility from Python ``2.6`` - ``3.3``, a module has been
 created. Clearly there is huge need to use conforming syntax. But many changes
 (e.g. ``property``, ``hasattr`` in ``2.5``) can be rewritten in pure python.
-
-Most of the code here is necessary to support Python 2.5. Once this dependency
-will be dropped, we'll get rid of most code.
 """
 import sys
 import imp
@@ -16,7 +13,7 @@ except:
 
 is_py3k = sys.hexversion >= 0x03000000
 is_py33 = sys.hexversion >= 0x03030000
-is_py25 = sys.hexversion < 0x02060000
+
 
 def find_module_py33(string, path=None):
     mod_info = (None, None, None)
@@ -48,6 +45,7 @@ def find_module_py33(string, path=None):
 
     return mod_info
 
+
 def find_module_pre_py33(string, path=None):
     mod_info = None
     if path is None:
@@ -57,6 +55,7 @@ def find_module_pre_py33(string, path=None):
 
     return (mod_info[0], mod_info[1], mod_info[2][2] == imp.PKG_DIRECTORY)
 
+
 def find_module(string, path=None):
     """Provides information about a module.
 
@@ -88,34 +87,6 @@ except NameError:
             else:
                 return default
 
-# ast module was defined in python 2.6
-try:
-    from ast import literal_eval
-except ImportError:
-    literal_eval = eval
-
-
-# properties in 2.5
-try:
-    property.setter
-except AttributeError:
-    class property(property):
-        def __init__(self, fget, *args, **kwargs):
-            self.__doc__ = fget.__doc__
-            super(property, self).__init__(fget, *args, **kwargs)
-
-        def setter(self, fset):
-            cls_ns = sys._getframe(1).f_locals
-            for k, v in cls_ns.iteritems():
-                if v == self:
-                    propname = k
-                    break
-            cls_ns[propname] = property(self.fget, fset,
-                                        self.fdel, self.__doc__)
-            return cls_ns[propname]
-else:
-    property = property
-
 # unicode function
 try:
     unicode = unicode
@@ -200,66 +171,10 @@ def use_metaclass(meta, *bases):
     return meta("HackClass", bases, {})
 
 try:
-    from inspect import cleandoc
-except ImportError:
-    # python 2.5 doesn't have this method
-    import string
-
-    def cleandoc(doc):
-        """Clean up indentation from docstrings.
-
-        Any whitespace that can be uniformly removed from the second line
-        onwards is removed."""
-        try:
-            lines = string.split(string.expandtabs(doc), '\n')
-        except UnicodeError:
-            return None
-        else:
-            # Find minimum indentation of any non-blank lines after first line.
-            margin = sys.maxint
-            for line in lines[1:]:
-                content = len(string.lstrip(line))
-                if content:
-                    indent = len(line) - content
-                    margin = min(margin, indent)
-            # Remove indentation.
-            if lines:
-                lines[0] = lines[0].lstrip()
-            if margin < sys.maxint:
-                for i in range(1, len(lines)):
-                    lines[i] = lines[i][margin:]
-            # Remove any trailing or leading blank lines.
-            while lines and not lines[-1]:
-                lines.pop()
-            while lines and not lines[0]:
-                lines.pop(0)
-            return string.join(lines, '\n')
-
-if is_py25:
-    # adds the `itertools.chain.from_iterable` constructor
-    import itertools
-
-    class chain(itertools.chain):
-        @staticmethod
-        def from_iterable(iterables):
-            # chain.from_iterable(['ABC', 'DEF']) --> A B C D E F
-            for it in iterables:
-                for element in it:
-                    yield element
-    itertools.chain = chain
-    del chain
-
-try:
-    from functools import reduce
+    from functools import reduce  # Python 3
 except ImportError:
     reduce = reduce
 
-try:
-    import json
-except ImportError:
-    # python 2.5
-    import simplejson as json
-
 try:
     encoding = sys.stdout.encoding
     if encoding is None:
diff --git a/jedi/api.py b/jedi/api.py
index af94e287..1ed57f6b 100644
--- a/jedi/api.py
+++ b/jedi/api.py
@@ -133,7 +133,7 @@ class Script(object):
             bs = builtin.Builtin.scope
             if isinstance(u, pr.Import):
                 if (u.relative_count > 0 or u.from_ns) and not re.search(
-                               r'(,|from)\s*$|import\s+$', completion_line):
+                            r'(,|from)\s*$|import\s+$', completion_line):
                     completions += ((k, bs) for k
                                             in keywords.get_keywords('import'))
 
diff --git a/jedi/api_classes.py b/jedi/api_classes.py
index 77d4a489..cbb64f7a 100644
--- a/jedi/api_classes.py
+++ b/jedi/api_classes.py
@@ -50,19 +50,20 @@ def _clear_caches_after_call(func):
 
 
 class BaseDefinition(object):
-    _mapping = {'posixpath': 'os.path',
-               'riscospath': 'os.path',
-               'ntpath': 'os.path',
-               'os2emxpath': 'os.path',
-               'macpath': 'os.path',
-               'genericpath': 'os.path',
-               'posix': 'os',
-               '_io': 'io',
-               '_functools': 'functools',
-               '_sqlite3': 'sqlite3',
-               '__builtin__': '',
-               'builtins': '',
-               }
+    _mapping = {
+        'posixpath': 'os.path',
+        'riscospath': 'os.path',
+        'ntpath': 'os.path',
+        'os2emxpath': 'os.path',
+        'macpath': 'os.path',
+        'genericpath': 'os.path',
+        'posix': 'os',
+        '_io': 'io',
+        '_functools': 'functools',
+        '_sqlite3': 'sqlite3',
+        '__builtin__': '',
+        'builtins': '',
+    }
 
     _tuple_mapping = dict((tuple(k.split('.')), v) for (k, v) in {
         'argparse._ActionsContainer': 'argparse.ArgumentParser',
diff --git a/jedi/cache.py b/jedi/cache.py
index e2c0c236..bf96671f 100644
--- a/jedi/cache.py
+++ b/jedi/cache.py
@@ -21,6 +21,7 @@ from __future__ import with_statement
 import time
 import os
 import sys
+import json
 import hashlib
 try:
     import cPickle as pickle
@@ -28,7 +29,6 @@ except:
     import pickle
 import shutil
 
-from jedi._compatibility import json
 from jedi import settings
 from jedi import common
 from jedi import debug
diff --git a/jedi/debug.py b/jedi/debug.py
index 321ffa87..1f08dcca 100644
--- a/jedi/debug.py
+++ b/jedi/debug.py
@@ -46,6 +46,7 @@ def warning(*args):
 
 def speed(name):
     if debug_function and enable_speed:
+        global start_time
         now = time.time()
         debug_function(SPEED, 'speed: ' + '%s %s' % (name, now - start_time))
 
diff --git a/jedi/dynamic.py b/jedi/dynamic.py
index bd87eeb2..fb96c295 100644
--- a/jedi/dynamic.py
+++ b/jedi/dynamic.py
@@ -248,7 +248,7 @@ def _scan_statement(stmt, search_name, assignment_details=False):
     check = list(stmt.get_commands())
     if assignment_details:
         for commands, op in stmt.assignment_details:
-            check +=  commands
+            check += commands
 
     result = []
     for c in check:
@@ -529,7 +529,7 @@ def check_statement_information(stmt, search_name):
         # isinstance check
         isinst = call.execution.values
         assert len(isinst) == 2  # has two params
-        obj, classes = [stmt.get_commands() for stmt in isinst]
+        obj, classes = [statement.get_commands() for statement in isinst]
         assert len(obj) == 1
         assert len(classes) == 1
         assert isinstance(obj[0], pr.Call)
diff --git a/jedi/evaluate_representation.py b/jedi/evaluate_representation.py
index d5402e4b..1bb2c65e 100644
--- a/jedi/evaluate_representation.py
+++ b/jedi/evaluate_representation.py
@@ -14,7 +14,7 @@ from __future__ import with_statement
 import copy
 import itertools
 
-from jedi._compatibility import property, use_metaclass, next, hasattr
+from jedi._compatibility import use_metaclass, next, hasattr
 from jedi import parsing_representation as pr
 from jedi import cache
 from jedi import helpers
diff --git a/jedi/fast_parser.py b/jedi/fast_parser.py
index bab9c3fe..1e94dce9 100644
--- a/jedi/fast_parser.py
+++ b/jedi/fast_parser.py
@@ -5,7 +5,7 @@ finished (and still not working as I want), I won't document it any further.
 """
 import re
 
-from jedi._compatibility import use_metaclass, property
+from jedi._compatibility import use_metaclass
 from jedi import settings
 from jedi import parsing
 from jedi import parsing_representation as pr
diff --git a/jedi/imports.py b/jedi/imports.py
index d6081386..81669ba1 100644
--- a/jedi/imports.py
+++ b/jedi/imports.py
@@ -249,7 +249,7 @@ class ImportPath(pr.Base):
                     sys.path = temp
                     raise
                 sys.path = temp
-            
+
             return importing
 
         if self.file_path:
diff --git a/jedi/keywords.py b/jedi/keywords.py
index cd591aa6..c940fd28 100644
--- a/jedi/keywords.py
+++ b/jedi/keywords.py
@@ -11,11 +11,7 @@ try:
     from pydoc_data import topics as pydoc_topics
 except ImportError:
     # Python 2.6
-    try:
-        import pydoc_topics
-    except ImportError:
-        # Python 2.5
-        pydoc_topics = None
+    import pydoc_topics
 
 if is_py3k:
     keys = keyword.kwlist
diff --git a/jedi/modules.py b/jedi/modules.py
index 3301eba7..398bcf69 100644
--- a/jedi/modules.py
+++ b/jedi/modules.py
@@ -19,8 +19,9 @@ import re
 import tokenizer as tokenize
 import sys
 import os
+from ast import literal_eval
 
-from jedi._compatibility import exec_function, unicode, is_py25, literal_eval
+from jedi._compatibility import exec_function, unicode
 from jedi import cache
 from jedi import parsing
 from jedi import parsing_representation as pr
@@ -383,8 +384,7 @@ def source_to_unicode(source, encoding=None):
         http://docs.python.org/2/reference/lexical_analysis.html#encoding-\
                                                                 declarations
         """
-        byte_mark = '\xef\xbb\xbf' if is_py25 else \
-                                        literal_eval(r"b'\xef\xbb\xbf'")
+        byte_mark = literal_eval(r"b'\xef\xbb\xbf'")
         if source.startswith(byte_mark):
             # UTF-8 byte-order mark
             return 'utf-8'
diff --git a/jedi/parsing.py b/jedi/parsing.py
index e69dad6b..1d417b03 100644
--- a/jedi/parsing.py
+++ b/jedi/parsing.py
@@ -403,10 +403,10 @@ class Parser(object):
         with common.ignored(IndexError, AttributeError):
             # If string literal is being parsed
             first_tok = stmt.token_list[0]
-            if (not stmt.set_vars and
-                not stmt.used_vars and
-                len(stmt.token_list) == 1 and
-                first_tok[0] == tokenize.STRING):
+            if (not stmt.set_vars
+                    and not stmt.used_vars
+                    and len(stmt.token_list) == 1
+                    and first_tok[0] == tokenize.STRING):
                 # ... then set it as a docstring
                 self.scope.statements[-1].add_docstr(first_tok[1])
 
@@ -442,7 +442,7 @@ class Parser(object):
         if self.user_position and (self.start_pos[0] == self.user_position[0]
                             or self.user_scope is None
                             and self.start_pos[0] >= self.user_position[0]):
-            debug.dbg('user scope found [%s] = %s' % \
+            debug.dbg('user scope found [%s] = %s' %
                     (self.parserline.replace('\n', ''), repr(self.scope)))
             self.user_scope = self.scope
         self.last_token = self.current
diff --git a/jedi/parsing_representation.py b/jedi/parsing_representation.py
index 5fd2c580..1185e110 100644
--- a/jedi/parsing_representation.py
+++ b/jedi/parsing_representation.py
@@ -38,9 +38,10 @@ from __future__ import with_statement
 import os
 import re
 import tokenizer as tokenize
+from inspect import cleandoc
+from ast import literal_eval
 
-from jedi._compatibility import next, literal_eval, cleandoc, Python3Method, \
-                            encoding, property, unicode, is_py3k
+from jedi._compatibility import next, Python3Method, encoding, unicode, is_py3k
 from jedi import common
 from jedi import debug
 
@@ -1276,12 +1277,13 @@ class Array(Call):
         return zip(self.keys, self.values)
 
     def get_code(self):
-        map = {self.NOARRAY: '(%s)',
-               self.TUPLE: '(%s)',
-               self.LIST: '[%s]',
-               self.DICT: '{%s}',
-               self.SET: '{%s}'
-              }
+        map = {
+            self.NOARRAY: '(%s)',
+            self.TUPLE: '(%s)',
+            self.LIST: '[%s]',
+            self.DICT: '{%s}',
+            self.SET: '{%s}'
+        }
         inner = []
         for i, stmt in enumerate(self.values):
             s = ''
diff --git a/jedi/recursion.py b/jedi/recursion.py
index 1727897a..7346fecf 100644
--- a/jedi/recursion.py
+++ b/jedi/recursion.py
@@ -35,7 +35,7 @@ class RecursionDecorator(object):
     def push_stmt(self, stmt):
         self.current = RecursionNode(stmt, self.current)
         check = self._check_recursion()
-        if check:# TODO remove False!!!!
+        if check:  # TODO remove False!!!!
             debug.warning('catched stmt recursion: %s against %s @%s'
                                 % (stmt, check.stmt, stmt.start_pos))
             self.pop_stmt()
diff --git a/jedi/tokenizer.py b/jedi/tokenizer.py
index e4b5c0d6..5cc2ce65 100644
--- a/jedi/tokenizer.py
+++ b/jedi/tokenizer.py
@@ -26,15 +26,25 @@ ENCODING = N_TOKENS + 2
 tok_name[ENCODING] = 'ENCODING'
 N_TOKENS += 3
 
+
 class TokenInfo(collections.namedtuple('TokenInfo', 'type string start end line')):
     def __repr__(self):
         annotated_type = '%d (%s)' % (self.type, tok_name[self.type])
         return ('TokenInfo(type=%s, string=%r, start=%r, end=%r, line=%r)' %
                 self._replace(type=annotated_type))
 
-def group(*choices): return '(' + '|'.join(choices) + ')'
-def any(*choices): return group(*choices) + '*'
-def maybe(*choices): return group(*choices) + '?'
+
+def group(*choices):
+    return '(' + '|'.join(choices) + ')'
+
+
+def any(*choices):
+    return group(*choices) + '*'
+
+
+def maybe(*choices):
+    return group(*choices) + '?'
+
 
 # Note: we use unicode matching for names ("\w") but ascii matching for
 # number literals.
@@ -91,9 +101,11 @@ ContStr = group(r"[bB]?[rR]?'[^\n'\\]*(?:\\.[^\n'\\]*)*" +
 PseudoExtras = group(r'\\\r?\n', Comment, Triple)
 PseudoToken = Whitespace + group(PseudoExtras, Number, Funny, ContStr, Name)
 
+
 def _compile(expr):
     return re.compile(expr, re.UNICODE)
 
+
 tokenprog, pseudoprog, single3prog, double3prog = map(
     _compile, (Token, PseudoToken, Single3, Double3))
 endprogs = {"'": _compile(Single), '"': _compile(Double),
@@ -120,14 +132,16 @@ for t in ("'", '"',
           "r'", 'r"', "R'", 'R"',
           "b'", 'b"', "B'", 'B"',
           "br'", 'br"', "Br'", 'Br"',
-          "bR'", 'bR"', "BR'", 'BR"' ):
+          "bR'", 'bR"', "BR'", 'BR"'):
     single_quoted[t] = t
 
 del _compile
 
 tabsize = 8
 
-class TokenError(Exception): pass
+
+class TokenError(Exception):
+    pass
 
 
 def generate_tokens(readline):
@@ -169,13 +183,14 @@ def generate_tokens(readline):
                 continue
 
         elif parenlev == 0 and not continued:  # new statement
-            if not line: break
+            if not line:
+                break
             column = 0
             while pos < max:                   # measure leading whitespace
                 if line[pos] == ' ':
                     column += 1
                 elif line[pos] == '\t':
-                    column = (column//tabsize + 1)*tabsize
+                    column = (column // tabsize + 1) * tabsize
                 elif line[pos] == '\f':
                     column = 0
                 else:
@@ -218,7 +233,7 @@ def generate_tokens(readline):
                 token, initial = line[start:end], line[start]
 
                 if (initial in numchars or                  # ordinary number
-                    (initial == '.' and token != '.' and token != '...')):
+                        (initial == '.' and token != '.' and token != '...')):
                     yield TokenInfo(NUMBER, token, spos, epos, line)
                 elif initial in '\r\n':
                     yield TokenInfo(NL if parenlev > 0 else NEWLINE,
@@ -239,8 +254,8 @@ def generate_tokens(readline):
                         contline = line
                         break
                 elif initial in single_quoted or \
-                    token[:2] in single_quoted or \
-                    token[:3] in single_quoted:
+                        token[:2] in single_quoted or \
+                        token[:3] in single_quoted:
                     if token[-1] == '\n':                  # continued string
                         strstart = (lnum, start)
                         endprog = (endprogs[initial] or endprogs[token[1]] or
diff --git a/setup.py b/setup.py
index bb0ee4e9..d32cc781 100755
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,6 @@ setup(name='jedi',
           'License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)',
           'Operating System :: OS Independent',
           'Programming Language :: Python :: 2',
-          'Programming Language :: Python :: 2.5',
           'Programming Language :: Python :: 2.6',
           'Programming Language :: Python :: 2.7',
           'Programming Language :: Python :: 3',
diff --git a/test/run.py b/test/run.py
index 013573ba..25eeccde 100755
--- a/test/run.py
+++ b/test/run.py
@@ -98,14 +98,14 @@ Tests look like this::
 """
 import os
 import re
+from ast import literal_eval
 
 if __name__ == '__main__':
     import sys
     sys.path.insert(0, '..')
 
 import jedi
-from jedi._compatibility import unicode, StringIO, reduce, is_py25, \
-                                literal_eval
+from jedi._compatibility import unicode, reduce, StringIO
 
 
 TEST_COMPLETIONS = 0
@@ -259,11 +259,6 @@ def collect_dir_tests(base_dir, test_files, check_thirdparty=False):
         files_to_execute = [a for a in test_files.items() if a[0] in f_name]
         lines_to_execute = reduce(lambda x, y: x + y[1], files_to_execute, [])
         if f_name.endswith(".py") and (not test_files or files_to_execute):
-            # for python2.5 certain tests are not being done, because it
-            # only has these features partially.
-            if is_py25 and f_name in ['generators.py', 'types.py']:
-                continue
-
             skip = None
             if check_thirdparty:
                 lib = f_name.replace('_.py', '')
diff --git a/test/test_regression.py b/test/test_regression.py
index 686bea72..5b6eac3b 100755
--- a/test/test_regression.py
+++ b/test/test_regression.py
@@ -14,7 +14,7 @@ import textwrap
 from .base import TestBase, unittest, cwd_at
 
 import jedi
-from jedi._compatibility import is_py25, utf8, unicode
+from jedi._compatibility import utf8, unicode
 from jedi import api
 api_classes = api.api_classes
 
@@ -86,8 +86,7 @@ class TestRegression(TestBase):
     def test_keyword_doc(self):
         r = list(self.definition("or", (1, 1)))
         assert len(r) == 1
-        if not is_py25:
-            assert len(r[0].doc) > 100
+        assert len(r[0].doc) > 100
 
         r = list(self.definition("asfdasfd", (1, 1)))
         assert len(r) == 0
@@ -95,8 +94,7 @@ class TestRegression(TestBase):
     def test_operator_doc(self):
         r = list(self.definition("a == b", (1, 3)))
         assert len(r) == 1
-        if not is_py25:
-            assert len(r[0].doc) > 100
+        assert len(r[0].doc) > 100
 
     def test_function_call_signature(self):
         defs = self.definition("""
@@ -333,8 +331,6 @@ class TestRegression(TestBase):
         assert [d.doc for d in defs]
 
     def test_goto_following_on_imports(self):
-        if is_py25:
-            return
         g = self.goto("import multiprocessing.dummy; multiprocessing.dummy")
         assert len(g) == 1
         assert g[0].start_pos != (0, 0)
diff --git a/tox.ini b/tox.ini
index 205c8594..acacf755 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,15 +1,10 @@
 [tox]
-envlist = py25, py26, py27, py32, py33
+envlist = py26, py27, py32, py33
 [testenv]
 deps =
-    pytest
+    https://bitbucket.org/hpk42/pytest/get/c4f58165e0d4.zip
 commands =
     py.test []
-[testenv:py25]
-deps =
-    simplejson
-    unittest2
-    {[testenv]deps}
 [testenv:py26]
 deps =
     unittest2