Add a check for posix environment for pygments.

cheat

@@ -2,14 +2,18 @@
 import os
 import sys
 
-try:
+USE_PYGMENTS = False
+
+# NOTE remove this check if it is confirmed to work on windows
+if os.name == 'posix':
+    try:
         from pygments import highlight
         from pygments.util import ClassNotFound
         from pygments.lexers import get_lexer_for_filename, TextLexer
         from pygments.formatters import TerminalFormatter
         USE_PYGMENTS = True
-except ImportError:
-    USE_PYGMENTS = False
+    except ImportError:
+        pass
 
 
 def cheat_directories():