TypeError: unbound method SendVars() must be called with Vars instance as first argument (got bool instance instead)

Question

So I am trying to create a GUI that shares information between frames (which are set up as classes) and ran into this error, which despite the many hours of googling and trying different things, had no luck solving. Im just trying to create a library which can be written to and read from other classes. I created this test code just to debug the problem so if you want to see my main code let me know, thanks.

class Vars():

    global vari 

    vari = dict(Sifo = False, Username = "", Password = "", Event = "", Time = "")


    def GetVars(self, var):

        print "1"
        return vari.pop(var)

    def SendVars(self, var, val):

        print"2"
        vari[str(var)] = val

class maintest():

    def test(self):

        yes = raw_input("Yes: ")

        if yes == "1":
            yes = True
        else:
            yes = False

        self.result(yes)

    def result(self, reslt):

        if reslt == True:
            yes = True
        else:
            yes = False 

        Vars.SendVars('yes', yes)

a = maintest()
a.test()

print Vars.GetVars('yes')

Output:

Yes: 1
Traceback (most recent call last):
  File "/Users/jacobsifodaskalakis/Documents/LiClipse 
Workspace/Test/Test4.py", line 43, in <module>
    a.test()
  File "/Users/jacobsifodaskalakis/Documents/LiClipse 
Workspace/Test/Test4.py", line 31, in test
    self.result(yes)
  File "/Users/jacobsifodaskalakis/Documents/LiClipse 
Workspace/Test/Test4.py", line 40, in result
    Vars.SendVars('yes', yes)
TypeError: unbound method SendVars() must be called with Vars 
instance as first argument (got str instance instead)

Answer 1

Looks like you need to instantiate your Vars class before you can use it:

def result(self, reslt):

    if reslt == True:
        yes = True
    else:
        yes = False 

    vars_instance = Vars()

    vars_instance.SendVars('yes', yes)

take a look at this question: How to instantiate a class in python

You also need to instantiate it near the end of your script:

vars_instance = Vars()

print vars_instance.GetVars('yes')

finally, you've forgotten to actually define your global vari

global vari
vari = {}