我正在为基于文本的游戏编写词法分析器。我的代码的简化示例如下：
class Character:
def goWest(self, location):
self.location == location.getWest() #getWest() would be defined in the location class
x = raw_input("What action would you like to take")
使用此代码，我希望玩家输入类似“ Go West”的内容，并有一个单独的函数接收子字符串“ West”，然后为该角色调用goWest（）方法。
您应该使用多个if语句：
x = raw_input("What action would you like to take")
direction = x.split()[-1].lower()
if direction == "west":
character.goWest(location)
elif direction == "east":
character.goEast(location)
elif direction == "north":
character.goNorth(location)
else:
character.goSouth(location)
或者，您可以更改go功能：
class Character:
def go(self, direction, location):
self.location = location
self.direction = direction
#call code based on direction
并按照上述方法进行操作
x = raw_input("What action would you like to take")
character.go(x.split()[-1].lower(), location)
你可以使用exec，但exec并eval是非常危险的。
一旦你拥有的功能goWest()，goEast()，goNorth()，和goSouth()：
>>> func = "go"+x.split()[-1]+"()" #"goWest()"
>>> exec(func)
west
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