我在用python创建库存系统时遇到问题

Question

我是Python的新手，无法正常使用库存系统。我不知道为什么每当我运行此代码时，列表中的[2]索引都会更新，但是我各项的功能都无法正常工作。

我已经删除了数千条命令，以便您可以更轻松地了解这里发生的事情。

Player = [raw_input("Welcome, please sign your first name here: "), raw_input("Now your last name here: "), "temp"]


def intro():

print "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
print "Very well then " + Player[0]
print " "
print "I just have to check a few things really quick though."
print "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"

if Player[0].isalpha() and Player[1].isalpha():
    print "And. It appears that everything is in order."
    print " "
    print "Sorry for the hold up, you wouldn't believe the amount of    pranksters we get here, wasting our time."
    print" "
    print "But anyways, everything appears to be in order, so. See you again soon"
    print "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
else:


build_choice(raw_input("A Sword, a Staff, and a Bow. Which of these weapons do you take?"))


def build_choice(wpn):
if wpn == "Sword" or "sword":
    Player[2] = wpn
    swordwpn()
elif wpn == "Staff" or "staff":
    Player[2] = wpn
    staffwpn()
elif wpn == "Bow" or "bow":
    Player[2] = wpn
    bowwpn()
else:
    print "You look for a ''" + wpn + "'' in the chest but don't find one."
    print "It looks like you have to go with one of the items in the chest already"
    build_choice(raw_input("A Staff, and a Bow. Which of these weapons    do you take?"))

    def swordwpn():
    print "sword"


    def staffwpn():
    print "staff"


    def bowwpn():
    print "bow"


    intro()
    print Player[2]

无论您实际键入哪种武器，它都会不断打印“剑”。

    A Sword, a Staff, and a Bow. Which of these weapons do you take? *staff*

    sword

调试软件没有发现任何代码错误，而且我无法弄清楚问题出在哪里。

它可能很容易捕获，但是再次，难以置信 python的新手