Develop Reference

Text Game Closes after every command - NOTE: I just started out

print "Welcome to the game. In the game you can 'look around' and 'examine things'."
print "There is also some hidden actions.
print "You wake up."
input = raw_input("> ")
haveKey = False
applesExist = True
if input == "look around":
print "You are in a dusty cell. There is a barrel in the corner of the room, an unmade bed,"
print "a cabinet and chest. There is also a cell door."
elif haveKey == False and input == "use door":
print "The door is locked."
elif haveKey == True and input == "use door":
print "You open the door and immediately gets shot with an arrow. You won, kinda."
elif input == "examine barrel":
print "There is apples in the barrel."
elif applesExist == True and input == "eat apple":
print "Mmmmh, that was yummy! But now there are no apples left..."
applesExist = False
elif applesExist == False and input == "eat apple":
print "sury, u et al aples befur!!1111"
elif input == "examine bed":
print "The bed is unmade, and has very dusty sheets. This place really needs a maid."
elif input == "sleep on bed":
print "You lie down and try to sleep, but you can't because of all the bugs crawling on you."
elif input == "examine chest":
print "There is a key in the chest."
elif input == "take key":
haveKey = True
print "You take the key."
elif input == "examine cabinet":
print "The cabinet is made of dark oak wood. There is a endless cup of tea in it."
elif input == "drink tea":
print "You put some tea in your mouth, but immediately spit it out."
print "It seems it has been here for quite some time."
else:
print "Huh, what did you say? Didn't catch that."
No syntax errors, no errors of any kind. Not. One.
The problem is that after I examine, look around and eat apples the
game closes. How do I fix this? With a While loop?
plz halp

You're obviously very beginner, I won't hammer you about how to do the best architecture. Get used to write code a little first.
If you want to repeat an action, that means a loop (here it's called the main game loop). You code currently takes an input, do a lot of checks to do an action on it, do that action and then... reach the end of the file and stops.
If you wan to go back to the input, you need to enclose all the code you want to repeat in a repetitive code structure, i.e. a loop.
Here is a basic pseudo-code of a game main loop.
playing=True:
while playing:
instruction = takeUserInputOfSomeForm();
if instruction == something:
doStuff()
# etc ...
elif instruction == "quit":
playing=False

You need a loop otherwise when the code hits the bottom of the file Python will exit. http://www.tutorialspoint.com/python/python_loops.htm

changing variables in one function from another function

I'm working on a text based adventure game in python. Nothing super fancy. I want to have a lever in 2 different rooms unlock a gate in a third room. Both levers need to be pulled in order for the gate to be unlocked.
here are the two rooms with the levers.
def SnakeRoom():
choice = raw_input("> ")
elif "snake" in choice:
FirstRoom.SnakeLever = True
print "As you pull the lever... You hear something click down the hall behind you."
SnakeRoom()
elif "back" in choice:
FirstRoom()
else:
dead("Arrows shoot out from the walls. You don't make it.")
def WolfRoom():
choice = raw_input("> ")
elif "wolf" in choice:
FirstRoom.WolfLever = True
print "As you pull the lever... You hear something click down the hall behind you."
WolfRoom()
elif "back" in choice:
FirstRoom()
else:
dead("Arrows shoot out from the walls. You don't make it.")
Here is the room with the gate.
def FirstRoom():
Lever = WolfLever and SnakeLever
choice = raw_input("> ")
if "straight" in choice and Lever != True:
print "You see a large gate in front of you. The gate is locked, there doesn't seem to be any way to open it."
FirstRoom()
elif "straight" in choice and Lever == True:
SecondRoom()
elif "left" in choice:
WolfRoom()
elif "right" in choice:
SnakeRoom()
elif "lever" in choice:
print "WolfLever: %s" % WolfLever
print "SnakeLever: %s" % SnakeLever
print "Lever: %s" % Lever
FirstRoom()
I shortened the code so you don't have to read through all the unnecessary stuff.
My biggest problem is I'm not super familiar with the Python language yet, so I'm not sure how to word everything to find the answers I'm looking for.
edit: Instead of FirstRoom.WolfLever I also tried just using WolfLever, in the body of my code, above Start() I have:
WolfLever
SnakeLever
Lever = WolfLever and SnakeLever
But my functions weren't updating these values. So I tried the FirstRoom. approach.

Credit to #Anthony and the following link: Using global variables in a function other than the one that created them
Globals definitely were the answer (With the exception of using classes). Here's what my WolfRoom() and SnakeRoom() functions look like now:
def WolfRoom():
global WolfLever
choice = raw_input("> ")
elif "wolf" in choice:
WolfLever = True
print "As you pull the lever... You hear something click down the hall behind you."
WolfRoom()
For FirstRoom() I added
global Lever
to the beginning of the function and right before Start() I have
WolfLever = False
SnakeLever = False
this way I have no errors or warnings (Was getting syntax warnings for assigning a value to my levers before declaring them as global) and everything works perfectly.

Trying to return a boolean value from a function

I am trying to program a simple text based game. In order to do this, I am having the user go to three separate rooms to complete a task and receive a piece. In order to do this, I have a value set as False then, upon completion of the room, I have a return statement used to change the Boolean value to True. When all three room functions return a True, then I set that to open a function that progresses the game. As of know, however, the return does not take place, and thus the Boolean values remain unchanged.
Here is an example of one door function:
def door1(incomp1):
if incomp1 == False:
print 'You enter door 1 and find a hideous internet troll.'
print "The troll says, 'LOOK AT THIS LOSER'"
options = ["YOU'RE THE LOSER", "I don't care." , "YOUR MOM IS FAT"]
options2 = [1,2,3]
for x in options:
print "\t :> %s" % x
choice1 = raw_input("What is your response? :>")
if ('loser' in choice1) or ('fat' in choice1):
print "You are sucked into the troll's behaviour and are driven insane"
print "After three days of insanity, you starve to death"
dead()
elif 'care' in choice1:
print 'The troll cannot feed off of your anger.'
print 'The troll starves and you recover one piece of the lever from his stomach.'
change()
entrywayopen()
return incomp1 == True
else:
unknown()
change()
door1(incomp1)
elif incomp1 == True:
print 'You already recovered the piece from room 1.'
entrywayopen()
So, I have incomp1 already at a value of False when the function is called. The user must get the correct answer, in this case the elif statement. At the end, I have it to return incomp1 == True. Yet, the value remains unchanged. My endgame in this room strategy is to return a value of True for the statement if door1(incomp1) and door2(incomp2) and door3(incomp3):. What is causing the Boolean change in value to not be returned?

A little about Python boolean expressions:
every python expression can be evaluated as a boolean
None, False, 0, 0.0, empty strings, lists, tuples and dictionaries are False; most others objects are True
that means: instead of x == True you can usually just write x, in your case: if incomp1:
If you are executing a function and it finishes without hitting a return, a None will be returned implicitly. If you do a boolean comparison on it, it will evaluate as False.

You need to replace "return incomp1 == True" with just "return True". Then call the door1 function like this "incomp1 = door1(incomp1)".
This will change the value of incomp1 to the value returned by the function "True".
You can also replace "elif incomp1 == True:" with a simple "else".
You might also consider adding a .lower() to choice1 = raw_input("What is your response? :>"). This will make it so if the player uses a capital letter in the input it will still function as desired.
def door1(incomp1):
if incomp1 == False:
print 'You enter door 1 and find a hideous internet troll.'
print "The troll says, 'LOOK AT THIS LOSER'"
options = ["YOU'RE THE LOSER", "I don't care." , "YOUR MOM IS FAT"]
options2 = [1,2,3]
for x in options:
print "\t :> %s" % x
#choice1 = raw_input("What is your response? :>")
choice1 = raw_input("What is your response? :>").lower()
if ('loser' in choice1) or ('fat' in choice1):
print "You are sucked into the troll's behaviour and are driven insane"
print "After three days of insanity, you starve to death"
dead()
elif 'care' in choice1:
print 'The troll cannot feed off of your anger.'
print 'The troll starves and you recover one piece of the lever from his stomach.'
change()
entrywayopen()
return True
else:
unknown()
change()
door1(incomp1)
#elif incomp1 == True:
else:
print 'You already recovered the piece from room 1.'
entrywayopen()
incomp1 = door1(incomp1)

Print string instead of error when list is empty

def flips():
print "Alright the workout of the day is a front-flip, back-flip and
side flip"
flips_left = ['side flip', 'front flip', 'back flip']
flip_choice = None
while len(flips_left) > 0:
flip_choice = raw_input("Do a flip ")
if "side flip" in flip_choice:
print flip_lines['side_flip']
flips_left.remove('side flip')
print "Great! Now just do the rest: %s" % flips_left
elif "front flip" in flip_choice:
print flip_lines['front_flip']
flips_left.remove('front flip')
print "Good stuff! This is what you have left: %s" %
flips_left
elif "back flip" in flip_choice:
print flip_lines['back_flip']
flips_left.remove('back flip')
else:
"That is not a type of flip! Try again!"
print "Great! You completed the WOD!"
This question is actually a two-parter:
What I'm doing is telling the user to input 'side flip', 'back flip' or 'front flip'. When they do the input is removed from the list 'flips_left'. That works fine until say the user enters the same flip again, I want to return a message telling them they did that already, and to try again.
For some reason I can't get the program to print the else statement when the user inputs something that isn't 'side flip' 'front flip' or 'back flip'. Any ideas? Thanks!

Your if statement logic isn't checking what remains in flips_left
Your best bet would be to do something more generic such as:
if flip_choice in flips_left:
print flip_lines[flip_choice]
flips_left.remove(flip_choice)
else:
print "Some error"
If you want to keep track of choices already made you could use a dictionary to keep track of which flips have already been performed.
flips_left = {'side flip':True, 'front flip':True, 'back flip':True}
...
if flip_choice in flips_left:
if flips_left[flip_choice]:
print flip_lines[flip_choice]
flips_left[flip_choice] = False
else:
print "You have already done %s!" % flip_choice
else:
print "That is not a valid flip"

Try adding a print keyword before your message:
else:
print "That is not a type of flip! Try again!"

Use of lists for collecting items

I'm currently going through the book "Learning Python The Hard Way", and I'm trying to make a simple game. In this game, I want to be able to pick up at item "Flashlight" in one room, to be able to get into another room. I can, however, not make it work :-(
So the question is, how do I carry the same list through several functions, and how do I put things in it? I want to be able to put multiple things in it.
I tried to call the pick() function within it self, but keep getting a "TypeERROR: 'str' is not callable, though I am providing my function with a list?
Hope you can help me out, thanks :-)
Code:
def start(bag):
print "You have entered a dark room"
print "You can only see one door"
print "Do you want to enter?"
answer = raw_input(">")
if answer == "yes":
light_room(bag)
elif answer == "no":
print "You descidede to go home and cry!"
exit()
else:
dead("That is not how we play!")
def light_room(bag):
print "WOW, this room is amazing! You see magazines, cans of ass and a flashlight"
print "What do you pick up?"
print "1. Magazine"
print "2. Cans of ass"
print "3. Flashlight"
pick(bag)
def pick(bag):
pick = raw_input(">")
if int(pick) == 1:
bag.append("Magazine")
print "Your bag now contains: \n %r \n" % bag
elif int(pick) == 2:
bag.append("Can of ass")
print "Your bag now contains: \n %r \n" % bag
elif int(pick) == 3:
bag.append("Flashlight")
print "Your bag now contains: \n %r \n" % bag
else:
print "You are dead!"
exit()
def start_bag(bag):
if "flashlight" in bag:
print "You have entered a dark room"
print "But your flashlight allows you to see a secret door"
print "Do you want to enter the 'secret' door og the 'same' door as before?"
answer = raw_input(">")
if answer == "secret":
secret_room()
elif answer == "same":
dead("A rock hit your face!")
else:
print "Just doing your own thing! You got lost and died!"
exit()
else:
start(bag)
def secret_room():
print "Exciting!"
exit()
def dead(why):
print why, "You suck!"
exit()
bag = []
start(bag)

I tried to call the pick() function within it self, but keep getting a "TypeERROR: 'str' is not callable, though I am providing my function with a list?
The problem here is that in this line:
def pick(bag):
pick = raw_input(">")
you bind pick to a new value (a str) so it doesn't reference a function anymore. Change that to something like:
def pick(bag):
picked = raw_input(">")