Question

I am making a python script that suggests new music to you, but for some reason i am getting a lot of errors. Script is not finished, but here it is

#!/usr/bin/env python
print("This is to help you find new bands!")
pop = 0
def indie():
    global indie
    global classic_rock
    global metal
    global pop
    indie = 0
    classic_rock = 0
    metal = 0
    pop = 0
    indie += 3
    classic_rock -= 1
    metal -= 1.5
    pop -= 3
def notindie():
    global indie
    indie += 1
def classicrock():
    global classic_rock
    classic_rock += 2
def notclassicrock():
    global classic_rock
    classic_rock -= 1
def popp():
    global pop
    global indie
    pop += 3
    indie -= 3
def notpop():
    global pop
    global metal
    pop -= 1
    metal += 1
def notmetal():
    global metal
    global pop
    metal -= 3
    pop += 1
def metal():
    global metal
    global pop
    global indie
    global classicrock
    classicrock += 1
    metal += 3
    indie -= 1
    pop -= 4
que = input("Do you consider yourself to be a hipster? (Yes/No) ")
if que == 'yes':
    indie()
if que == 'no':
    notindie()
que2 = input("Do you like the Rolling Stones? (Yes/No) ")
if que2 == 'yes':
    classicrock()
if que2 == 'no':
    notclassicrock()
que3 = input("Do you like Britney Spears? (Yes/No) ")
if que3 == 'yes':
    popp()
if que3 == 'no':
    notpop()
que4 = input("Do you like Metallica? (Yes/No) ")
if que4 == 'no':
    notmetal()
if que4 == 'yes':
    metal()

if i enter yes for do you like metallica, i get the error

File "tastepy.py", line 69, in <module>
    metal()
TypeError: 'float' object is not callable

if i enter in no for the hipster question:

Traceback (most recent call last):
  File "tastepy.py", line 54, in <module>
    notindie()
  File "tastepy.py", line 19, in notindie
    indie += 1
TypeError: unsupported operand type(s) for +=: 'function' and 'int'

I get these although there is no float anything in metal()
anybody know what is going on?

Answer 1

The problem is that you are using the same names for your functions as your variables, and they are clobbering each other. Try using different names, e.g. for functions likes_metal() and for the variable metal_score.

Also you should declare and initialize your globals at the global level, not within the indie function.