Fix handling of binary and .pex python files

2 files changed, 15 insertions, 4 deletions

diff --git a/isort/isort.py b/isort/isort.py
index 330755bc..80f12c53 100644
--- a/isort/isort.py
+++ b/isort/isort.py
@@ -100,10 +100,19 @@ class SortImports(object):
                           " or matches a glob in 'skip_glob' setting".format(file_path))
                 file_contents = None
             elif not file_contents:
-                self.file_path = file_path
-                self.file_encoding = coding_check(file_path)
-                with io.open(file_path, encoding=self.file_encoding, newline='') as file_to_import_sort:
-                    file_contents = file_to_import_sort.read()
+                file_encoding = coding_check(file_path)
+                with io.open(file_path, encoding=file_encoding, newline='') as file_to_import_sort:
+                    try:
+                        file_contents = file_to_import_sort.read()
+                        self.file_path = file_path
+                        self.file_encoding = file_encoding
+                    except UnicodeDecodeError:
+                        file_contents = None
+                        self.skipped = True
+                        if self.config['verbose']:
+                            print("WARNING: {} was skipped as it "
+                                  "couldn't be opened with the given {} encoding".format(file_path,
+                                                                                         self.file_encoding))
 
         if file_contents is None or ("isort:" + "skip_file") in file_contents:
             self.skipped = True
diff --git a/isort/main.py b/isort/main.py
index 616dc2f0..98e827c7 100644
--- a/isort/main.py
+++ b/isort/main.py
@@ -61,6 +61,8 @@ def is_python_file(path):
     _root, ext = os.path.splitext(path)
     if ext in ('.py', '.pyi'):
         return True
+    if ext in ('.pex', ):
+        return False
 
     # Skip editor backup files.
     if path.endswith('~'):