subprogram issues: cannot unpack non-iterable function object error

[ndc85430]

Those are parameters to the function and so the names are only relevant inside the function. The variables you pass to the function containing the values for those parameters of course don't need to have the same names as those. It wouldn't really make sense to enforce that, would it?

For example, given

>>> def foo(x, y):
...     print(x, y)
... 

I can call all of these:

>>> z = 1
>>> t = 2
>>> foo(z, t)
1 2
>>> foo(3, 4)
3 4
>>> x = 5
>>> y = 10
>>> foo(x, y)
5 10
>>> 

Note that in the last example, there are two variables x: one local to the function and one outside it. Perhaps you need to learn about scope if you don't understand this?

[djwilson0495]

How should I call the variables so that they can be used in different subprograms?
I'm currently getting this error after changing the block of code to Yoriz's suggestion:

Error:
 File "c:/Users/djwil/Documents/python/learning python/Chapter 19 - Chunky Challenges/Mastermind.py", line 103, in <module>
    main() # runs main subprogram
  File "c:/Users/djwil/Documents/python/learning python/Chapter 19 - Chunky Challenges/Mastermind.py", line 101, in main
    quiz(data,answers)
  File "c:/Users/djwil/Documents/python/learning python/Chapter 19 - Chunky Challenges/Mastermind.py", line 36, in quiz
    if guess1 == c1: # if answer is correct
UnboundLocalError: local variable 'guess1' referenced before assignment

---

I've read up on global and local scope in python, I'm not sure how to call the data from the other subprogram where it has local scope into another subprogram, without defining it outside of the subprograms which would give it global scope.

[Yoriz]

You have returned

data = (guess1,guess2,guess3,guess4)
answers = (c1,c2,c3,c4)

from the function get_data
You pass those in to quiz(data,answers)
so

if guess1 == c1:

should actually be

if data[0] == answers[0]:

to obtain the values at index zero of both the tuples.

[deanhystad]

I think your program would look a lot better if you got rid of all variables named choiceN or cN where N is a number from 1 to 4. Variable names that look the same except for a numeric suffix are a good indication that you should be using a collection instead. Since order is important I would use a sequence; list of tuple. That will take care of most of your variable passing issues.