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Old 02-07-2006, 05:24 PM   #1
JRR883
Member
 
Registered: Aug 2005
Location: God's barf bag
Distribution: Ubuntu 7.04 (Feisty Fawn)
Posts: 86

Rep: Reputation: 15
Python: making a reference to a function not yet defined


I'm learning Python, and I've made a couple of simple mathematical programs and I'm wanting to combine the two scripts. Here's the two seperate programs:

Code:
def multiply():
	def intro():
		print "Yo bitches, I can multiply. Wanna watch?"
	intro()
	def inputs():
		n1=input("What's the first number?: ")
		n2=input("Now gimme the second number: ")
		p=n1*n2
		print "I just did it, motherfucker. The answer is", p, "units."
	inputs()
	def again():
		again=raw_input("Are you going to mathematically rape me again?(y or n): ")
		if again=='y':
			print inputs()
		if again=='Y':
			print inputs()
		if again=='n':
			print "Fuck, and I was looking forward to that."
		if again=='N':
			print "Fuck, and I was looking forward to that."
	again()
multiply()
Code:
def circle():
	def intro():	
		print "Welcome to my circumference finder!"
	intro()
	def main():
		r=input("What is the radius of the circle? ")
		c=r*r*3.14
		print "The circumference is", c, "units"
		again=raw_input("Do you want to do another calculation? (y or n) ")
		if again=='y':
			print main()
		elif again=='Y':
			print main()
		else: 
			print "Good bye"
	main()
circle()
So I tried combining the two like this.
Code:
def choose():
	print "1. Multiply numbers"
	print "2. Find the circumference of a circle"
	choice=raw_input("Choose which program you would like to use: ")
	if choice=='1':
		print multiply()
	elif choice=='2':
		print circle()
	else:
		print "Please choose a valid option"
		print choose()
choose()
def multiply():
	def intro():
		print "Yo bitches, I can multiply. Wanna watch?"
	intro()
	def inputs():
		n1=input("What's the first number?: ")
		n2=input("Now gimme the second number: ")
		p=n1*n2
		print "I just did it, motherfucker. The answer is", p, "units."
	inputs()
	def again():
		again=raw_input("Are you going to mathematically rape me again?(y or n): ")
		if again=='y':
			print inputs()
		if again=='Y':
			print inputs()
		if again=='n':
			print "Fuck, and I was looking forward to that."
		if again=='N':
			print "Fuck, and I was looking forward to that."
	again()
multiply()
def circle():
	def intro():	
		print "Welcome to my circumference finder!"
	intro()
	def main():
		r=input("What is the radius of the circle? ")
		c=r*r*3.14
		print "The circumference is", c, "units"
		again=raw_input("Do you want to do another calculation? (y or n) ")
		if again=='y':
			print main()
		elif again=='Y':
			print main()
		else: 
			print "Good bye"
	main()
circle()
When I run the programs seperately, they run fine. When I run the last one and choose the program to run, it says that multiply or circle is not defined. How do I define it without running it before choose()?
 
Old 02-08-2006, 11:28 AM   #2
sirclif
Member
 
Registered: Sep 2004
Location: south texas
Distribution: fedora core 3,4; gentoo
Posts: 192

Rep: Reputation: 30
don't run the function after you define it

def: multiply
...
multiply()

define all your functions first, then run them. in this case, you just want to run choose, so it should look like this.

Code:
def choose():
	print "1. Multiply numbers"
	print "2. Find the circumference of a circle"
	choice=raw_input("Choose which program you would like to use: ")
	if choice=='1':
		print multiply()
	elif choice=='2':
		print circle()
	else:
		print "Please choose a valid option"
		print choose()

def multiply():
	def intro():
		print "Yo bitches, I can multiply. Wanna watch?"
	intro()
	def inputs():
		n1=input("What's the first number?: ")
		n2=input("Now gimme the second number: ")
		p=n1*n2
		print "I just did it, motherfucker. The answer is", p, "units."
	inputs()
	def again():
		again=raw_input("Are you going to mathematically rape me again?(y or n): ")
		if again=='y':
			print inputs()
		if again=='Y':
			print inputs()
		if again=='n':
			print "Fuck, and I was looking forward to that."
		if again=='N':
			print "Fuck, and I was looking forward to that."
	again()

def circle():
	def intro():	
		print "Welcome to my circumference finder!"
	intro()
	def main():
		r=input("What is the radius of the circle? ")
		c=r*r*3.14
		print "The circumference is", c, "units"
		again=raw_input("Do you want to do another calculation? (y or n) ")
		if again=='y':
			print main()
		elif again=='Y':
			print main()
		else: 
			print "Good bye"
	main()

choose
if for some reason that still fails, put your def choose() block after the other two function definitions.
 
  


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