CODEWITHSUNDEEP
python
Joachim
Joachim

Reputation: 375

how can i combine 2 strings to 1 string?

I want to create a string from 2 strings that I use in a function. It is the zz that I use in the function geraeusche.mach_geraeusche(2000, "hupen") but I can't create that. I get the following error message:

descriptor 'play' for 'Sound' objects doesn't apply to a 'str' object

My code:

class Geraeusche(pygame.sprite.Sprite):       
    def __init__(self):
        pygame.sprite.Sprite.__init__(self) 
        self.startzeit = 0 
        self.zaehler = 0    
        self.martinshorn = pygame.mixer.Sound("Bilder/martinshorn.mp3")
        self.hupen = pygame.mixer.Sound("Bilder/horn.wav") 
    
    def mach_geraeusche(self,warten,auswahl):
    
        if self.zaehler < 10:

            aktuelle_zeit = pygame.time.get_ticks()
                
            if aktuelle_zeit - self.startzeit > warten:
                self.startzeit = aktuelle_zeit
                self.zaehler +=1
            
                zz=str("self." + auswahl)
                pygame.mixer.Sound.play(zz)              

while True:
    clock.tick(60)   
    geraeusche.mach_geraeusche(2000,"hupen")

Upvotes: 0

Views: 66

Answers (1)

ljdyer
ljdyer

Reputation: 2086

I can see two issues here.

First, the way you are trying to access the class attribute will not work - zz will just be the string ‘self.hupen’ and will not actually point to that attribute. The correct way to do this is:

zz = getattr(self, auswahl)

as per Python: access class property from string.

Second, this doesn’t appear to be the correct way to initialise and play sounds in pygame. It should be:

my_sound = pygame.mixer.Sound(zz)
pygame.mixer.Sound.play(my_sound)

as per https://pythonprogramming.net/adding-sounds-music-pygame/

Upvotes: 1

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