Python Practice-if-else-or

Color=raw_input ("Enter your favorite color:") if color = = "Red" or color = = "Green" or color = = "BLACK": print "you    Can play this game. " Else:print "Sorry, you can ' t play the game."

#开始不明白为什么 = = After the color must take "", and the previous age== not "". Run once, error XXX is not a variable. If not with "" will be considered a variable, and the number is not allowed as a variable name, so will not be treated as a variable error
#还有我将代码改成这样if color = = "Red" or color = = "Green" and color ==3, code can run, but I input 3 can not be correctly judged

Python Practice-if-else-or