Fix terminal colors not displaying properly on Windows

bandit/formatters/screen.py

@@ -48,6 +48,17 @@
 from bandit.core import docs_utils
 from bandit.core import test_properties
 
+# This fixes terminal colors not displaying properly on Windows systems.
+# Colorama will intercept any ANSI escape codes and convert them to the
+# proper Windows console API calls to change text color.
+if sys.platform.startswith('win32'):
+    try:
+        import colorama
+    except ImportError:
+        pass
+    else:
+        colorama.init()
+
 LOG = logging.getLogger(__name__)
 
 COLOR = {

requirements.txt

@@ -5,3 +5,4 @@ GitPython>=1.0.1 # BSD License (3 clause)
 PyYAML>=3.12 # MIT
 six>=1.10.0 # MIT
 stevedore>=1.20.0 # Apache-2.0
+colorama>=0.3.9;platform_system=="Windows" # BSD License (3 clause)