Update install.py

install.py

@@ -1,9 +1,9 @@
 import os
 import platform
 
-is_linux = false
-is_macos = false
-is_windows = false
+is_linux = False
+is_macos = False
+is_windows = False
 
 def check_os():
     os_type = platform.uname().sysname.lower()