using methods of differents objects in pygame in a while True, chess project [duplicate]

Question

I'm new to pygame, and OOP in python ( used a lot of java before) For a personal project, i'm trying to make a chess game, but I have a problem.

I'm displaying my board with an array of values. The pieces are where they should be.
Now, I'm trying to moove theses pieces, and to do so, the first step is to be able to return the name of the case I am clicking in.

But the fact is that it's not working every time. I'm using a while True statement to get the event, and if my mouse cursos is in the dimensions of the case, it's supposed to return the name of the case.
The fact that this is in a while True statement, updates every time the case that is calling this method, and if it's not the right case that is called when i'm clicking, the method don't return the name of the case.

# initialisation board
def initBoard() :   # if <0 white, >0 black, 1= Pun , 5 = Tower,2= Knight,3 Bishop, 9 = Queen , 50 = King
    board =[[-5,-2,-3,-9,-50,-3,-2,-5], 
            [-1,-1,-1,-1,-1,-1,-1,-1],
            [0,0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0,0],
        
            [0,0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0,0],
            [1,1,1,1,1,1,1,1],
            [5,2,3,50,9,3,2,5]]
    return board
board = initBoard()

class Case: 
def __init__(self,ecran,nom,x,y,color,piece):
    self.nom = nom
    self.x = x 
    self.y = y 
    self.piece = piece
    self.color =color

      # load piece
    #choose the right name of the piece i want to use, it works so it's useless to show you this


    
def getNom(self):
    return self.nom

def activeCase(self):
    for event in pygame.event.get():
        if event.type == pygame.QUIT or event.type == pygame.KEYDOWN:
            continuer = False
        if event.type == pygame.MOUSEBUTTONDOWN:
            x,y = pygame.mouse.get_pos()
            print ("cursor is in : ",x,y)             
            print ("you are in case : ", self.nom)   
            if self.x <= x <= self.x+dimensionCase and self.y <= y <= self.y+dimensionCase: # if cursor in case , return the name of the case
                print(self.nom)

#constants
dimensions =(700,700)
dimensionCase = 70
ecran = pygame.display.set_mode(dimensions)
continuer = True 
listeCases = [] # array of cases I will create 
letter=65 # ASCII CODE for letter A, will be usefull for piece name
number=8  #number's name  of piece (will begin to A8, B8 , C8, ... ,A1)
yInitial,xInitiale =100,100  # where begins the piece's placement
pygame.draw.rect(ecran,(100,100,100), (0,0,800,800)) # background

while continuer:
    letter=65 # ASCII CODE for letter A, will be usefull for piece name
    number=8  #number's name  of piece (will begin to A8, B8 , C8, ... ,A1)
    x,y= xInitiale,yInitial
    for i in range (8):
        x=xInitiale
        for j in range (8):
            if (i + j) %2 == 0 : couleur = (201,209,242) # color
            else : couleur = (89, 113, 212) # color

            nomCase= chr(letter)+str(number)## case name ( to get the name from A8 to H1)
            letter+=1 ##increase the letter for name 
            
            case= Case(ecran,nomCase,x,y,couleur,board[i][j]) #creation of the case
            case.activeCase() # activate the case I just created
            listeCases.append(case)
            
            pygame.display.flip()  # actualise    
            x+=dimensionCase #increase of case dimension for placement
        y+=dimensionCase #increase y for placment 
        
        letter=65 #piece letter
        number-=1  ## piece number

    
    for event in pygame.event.get(): ## THIS PART IS NOT WORKING aymore Idk why 
        if event.type == pygame.QUIT or event.type == pygame.KEYDOWN:
            continuer = False
        if event.type == pygame.MOUSEBUTTONUP:
            x,y = pygame.mouse.get_pos()
            for cases in listeCases: 
                print(cases.activeCase()) #why this doesn't work ? 

pygame.quit()

When I click multiple times in the same case (A1) :

cursor is in :  140 131
you are in case :  G8
cursor is in :  140 131
you are in case :  G6
cursor is in :  140 131
you are in case :  F2
cursor is in :  140 131
you are in case :  D8

Tkanks for your help

Answer 1

Indeed, I used for event in pygame.event.get(): at 2 differents times. All I had to do was removing for event in pygame.event.get(): from my method and usings parmeters to receive event

    def activeCase(self,event):
    if event.type == pygame.QUIT or event.type == pygame.KEYDOWN:
        continuer = False
    if event.type == pygame.MOUSEBUTTONDOWN:
        x,y = pygame.mouse.get_pos()               
        if self.x <= x <= self.x+dimensionCase and self.y <= y <= self.y+dimensionCase: # if cursos in case , return the name of the case
            print(self.nom)