从另一个文件中的类导入函数？

我正在编写一个有趣的 Python 程序，但是在试图从另一个文件中的类导入函数时遇到了麻烦。这是我的代码:

#jurassic park mainframe


from random import randint
from sys import exit
from comm_system import Comm_system #the file i want to import from






class Jpark_mainframe(object):
def mainframe_home(self):
print "=====Welcome to the Jurassic Park Mainframe====="
print "==========Security Administration==============="
print "===========Communications Systems==============="
print "===============System Settings=================="
print "===================Quit========================="


prompt = raw_input("What would you like to do? ")


while prompt != "Quit":


if prompt == "Security Administration":
print "Please enter the 5-digit passcode:"
security_passcode = "%d%d%d%d%d" % (2, 0, 1, 2, randint(1, 2))
security_guess = raw_input(": ")
security_guesses = 0


while security_guess != security_passcode and security_guesses < 7:
print "Incorrect. Please enter the security passcode."
security_guesses += 1
security_guess = raw_input(": ")


if security_guess == security_passcode:
print "=========Security Administration======="
print "Area 1 Fences: Off"
print "Area 2 Fences: On"
print "Area 3 Fences: Off"
print "Velociraptor Compound: Off"
print "Lobby Security System: Off"
print "Entrance Facility System: Off"
print "To enable all systems, enter 'On'"




enable_security = raw_input(": ")


if enable_security == "On":
print "Systems Online."




if prompt == "System Settings":
print "You do not have access to system settings."
exit(0)




if prompt == "Communications Systems":
print "===========Communications Systems==========="
print "error: 'comm_link' missing in directories"
exit(0)
return Comm_system.run #this is where I want to return the
#the other file


the_game = jpark_mainframe()
the_game.mainframe_home()

我想从另一个文件中的类返回一个名为 run()的函数。当我导入文件时，它首先运行包含 run()的类，然后继续运行原始代码。为什么会这样？

下面是 comm _ system 的代码:

#communication systems




from sys import exit


class Comm_system(object):
def run(self):


comm_directory = ["net_link", "tsfa_run", "j_link"]
print "When the system rebooted, some files necessary for"
print "communicating with the mainland got lost in the directory."
print "The files were poorly labeled as a result of sloppy"
print "programming on the staff's part. You must locate the"
print "the file and contact the rescue team before the dinosaurs"
print "surround the visitor's center. You were also notified the"
print "generators were shorting out, and the mainframe will lose"
print "power at any moment. Which directory will you search in?"
print "you don't have much time! Option 1: cd /comm_sys/file"
print "Option 2: cd /comm_sys/dis"
print "Option 3: cd /comm_sys/comm"


dir_choice = raw_input("jpark_edwin$ ")


if dir_choice == "/comm_sys/file" or dir_choice == "/comm_sys/dis":
print "misc.txt"
print "You couldn't locate the file!"
print "The system lost power and your computer shut down on you!"
print "You will not be able to reach the mainland until the system"
print "comes back online, and it will be too late by then."
return 'death'


if dir_choice == "/comm_sys/comm":
comm_directory.append("comm_link")
print comm_directory
print "You found the right file and activated it!"
print "Just in time too, because the computers shut down on you."
print "The phonelines are radios are still online."
print "You and the other survivors quickly call the mainlane"
print "and help is on the way. You all run to the roof and wait"
print "until the helocopter picks you up. You win!"
a_game = Comm_system()
a_game.run()