如何在 class Z23EEEB4347BDD265DDFC6B7EE9A3B7 中的另一个 function 中使用一个 function 变量

Question

I've code like this

class salesperson:

    def __init__(self, name):
        self.name=name
    
    
    def buyproduct(self, product_name, market_price, quantity):
        self.product_name = product_name
        self.market_price=market_price
        self.quantity=quantity
    
        return ({self.product_name: [self.market_price, self.quantity]})


    
    
    def getname(self):
        print(self.name)

Input:

sp_name=salesperson('name')
sp_name.buyproduct('mobile',30,20)

output:

{'mobile': [30, 20]}

Know I want to create a separate function called "getvalue" inside class & Use that variables in "buyproduct" function & want to perform so operations.

Like.

class salesperson:


    def __init__(self, name):
        self.name=name
    
    
    def buyproduct(self, product_name, market_price, quantity):
        self.product_name = product_name
        self.market_price=market_price
        self.quantity=quantity
    
        return ({self.product_name: [self.market_price, self.quantity]})

####################################################creating new func######
    def getvalue(self):
        self.buyproduct()
        finalamount=market_price * quantity
        return finalamount
##################################################################
    
    
    def getname(self):
        print(self.name)

Clearly I don't know the syntax, So can you guys know the syntax/example that calls the one function inside another function with in class?

Expected input:

sp_name.getvalue() 

should print

Expected output

600

Explanation: 30 * 20 = 600(From buy product function)...

Thanks in advance

Answer 1

I'm pretty sure you just can't do it that way. The way you are supposed to do this in Python is put all the class variables in the init function. So you would do like this:

class Salesperson:


    def __init__(self, name, product_name, market_price, quantity):
        self.name = name
        self.product_name = product_name
        self.market_price = market_price
        self.quantity = quantity
    
    def buy_product(self):
        return {self.product_name: [self.market_price, self.quantity]}

    def get_value(self):
        finalamount=self.market_price * self.quantity
        return finalamount

    def getname(self):
        print(self.name)

And if your problem is you sometime want to execute get_value but you dont want to give useless variables to Salesperson class, you just give name and product_name None value, like this:

sp_name=Salesperson(None,None,30,20)
sp_name.get_value()

If you really want to do it your way (which I don't recommend), return in buy_product the original dictionary + the variables you need in get_value:

class Salesperson:


    def __init__(self, name):
        self.name = name
    
    def buy_product(self, product_name, market_price, quantity):
        return [{product_name: [market_price, quantity]}, market_price, quantity]

    def get_value(self):
        buy_product_returns = self.buy_product()
        finalamount = buy_product_returns[1] * buy_product_returns[2]
        return finalamount

    def getname(self):
        print(self.name)