diff --git a/spacy/compat.py b/spacy/compat.py
index 59ffffe3a..19e9ec7c0 100644
--- a/spacy/compat.py
+++ b/spacy/compat.py
@@ -39,11 +39,11 @@ copy_reg = copy_reg
 CudaStream = CudaStream
 cupy = cupy
 copy_array = copy_array
-izip = getattr(itertools, 'izip', zip)
+izip = getattr(itertools, "izip", zip)
 
-is_windows = sys.platform.startswith('win')
-is_linux = sys.platform.startswith('linux')
-is_osx = sys.platform == 'darwin'
+is_windows = sys.platform.startswith("win")
+is_linux = sys.platform.startswith("linux")
+is_osx = sys.platform == "darwin"
 
 # See: https://github.com/benjaminp/six/blob/master/six.py
 is_python2 = sys.version_info[0] == 2
@@ -55,8 +55,10 @@ if is_python2:
     unicode_ = unicode  # noqa: F821
     basestring_ = basestring  # noqa: F821
     input_ = raw_input  # noqa: F821
-    json_dumps = lambda data: ujson.dumps(data, indent=2, escape_forward_slashes=False).decode('utf8')
-    path2str = lambda path: str(path).decode('utf8')
+    json_dumps = lambda data: ujson.dumps(
+        data, indent=2, escape_forward_slashes=False
+    ).decode("utf8")
+    path2str = lambda path: str(path).decode("utf8")
 
 elif is_python3:
     bytes_ = bytes
@@ -71,35 +73,41 @@ def b_to_str(b_str):
     if is_python2:
         return b_str
     # important: if no encoding is set, string becomes "b'...'"
-    return str(b_str, encoding='utf8')
+    return str(b_str, encoding="utf8")
 
 
 def getattr_(obj, name, *default):
     if is_python3 and isinstance(name, bytes):
-        name = name.decode('utf8')
+        name = name.decode("utf8")
     return getattr(obj, name, *default)
 
 
 def symlink_to(orig, dest):
     if is_windows:
         import subprocess
-        subprocess.call(['mklink', '/d', path2str(orig), path2str(dest)], shell=True)
+
+        subprocess.call(["mklink", "/d", path2str(orig), path2str(dest)], shell=True)
     else:
         orig.symlink_to(dest)
 
+
 def symlink_remove(link):
-    # https://stackoverflow.com/questions/26554135/cant-delete-unlink-a-symlink-to-directory-in-python-windows
-    if( os.path.isdir(path2str(link)) and is_windows ): # this should only be on Py2.7 and windows
+    # https://stackoverflow.com/q/26554135/6400719
+    if os.path.isdir(path2str(link)) and is_windows:
+        # this should only be on Py2.7 and windows
         os.rmdir(path2str(link))
     else:
         os.unlink(path2str(link))
 
+
 def is_config(python2=None, python3=None, windows=None, linux=None, osx=None):
-    return (python2 in (None, is_python2) and
-            python3 in (None, is_python3) and
-            windows in (None, is_windows) and
-            linux in (None, is_linux) and
-            osx in (None, is_osx))
+    return (
+        python2 in (None, is_python2)
+        and python3 in (None, is_python3)
+        and windows in (None, is_windows)
+        and linux in (None, is_linux)
+        and osx in (None, is_osx)
+    )
 
 
 def normalize_string_keys(old):
@@ -107,7 +115,7 @@ def normalize_string_keys(old):
     new = {}
     for key, value in old.items():
         if isinstance(key, bytes_):
-            new[key.decode('utf8')] = value
+            new[key.decode("utf8")] = value
         else:
             new[key] = value
     return new
@@ -117,19 +125,21 @@ def import_file(name, loc):
     loc = str(loc)
     if is_python_pre_3_5:
         import imp
+
         return imp.load_source(name, loc)
     else:
         import importlib.util
+
         spec = importlib.util.spec_from_file_location(name, str(loc))
         module = importlib.util.module_from_spec(spec)
         spec.loader.exec_module(module)
         return module
 
 
-def locale_escape(string, errors='replace'):
-    '''
+def locale_escape(string, errors="replace"):
+    """
     Mangle non-supported characters, for savages with ascii terminals.
-    '''
+    """
     encoding = locale.getpreferredencoding()
-    string = string.encode(encoding, errors).decode('utf8')
+    string = string.encode(encoding, errors).decode("utf8")
     return string
diff --git a/spacy/tests/test_symlink_windows.py b/spacy/tests/test_symlink_windows.py
index 63506be95..a19395af8 100644
--- a/spacy/tests/test_symlink_windows.py
+++ b/spacy/tests/test_symlink_windows.py
@@ -1,36 +1,40 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import pytest
 import os
 from pathlib import Path
 
 from ..compat import symlink_to, symlink_remove, path2str
 
-import pytest
 
 def target_local_path():
-  return './foo-target'
+    return "./foo-target"
+
 
 def link_local_path():
-  return './foo-symlink'
+    return "./foo-symlink"
 
 
-@pytest.fixture(scope='function')
+@pytest.fixture(scope="function")
 def setup_target(request):
-  target = Path(target_local_path())
-  if not target.exists():
-    os.mkdir( path2str(target) )
+    target = Path(target_local_path())
+    if not target.exists():
+        os.mkdir(path2str(target))
 
-  # yield -- need to cleanup even if assertion fails
-  # https://github.com/pytest-dev/pytest/issues/2508#issuecomment-309934240
-  def cleanup():  
-    symlink_remove( Path(link_local_path() ) )
-    os.rmdir( target_local_path()  )
+    # yield -- need to cleanup even if assertion fails
+    # https://github.com/pytest-dev/pytest/issues/2508#issuecomment-309934240
+    def cleanup():
+        symlink_remove(Path(link_local_path()))
+        os.rmdir(target_local_path())
 
-  request.addfinalizer(cleanup)
+    request.addfinalizer(cleanup)
 
 
 def test_create_symlink_windows(setup_target):
-  target = Path(target_local_path())
-  link = Path(link_local_path())
-  assert target.exists()
+    target = Path(target_local_path())
+    link = Path(link_local_path())
+    assert target.exists()
 
-  symlink_to(link, target)
-  assert link.exists()
+    symlink_to(link, target)
+    assert link.exists()