gistfile1.txt

class FormatTelephone:
    def __init__(self, 
    phone, 
    mask="+* (***) ***-**-**",
    maskSymbol="*"):
        self.phone = phone
        self.maskSymbol = maskSymbol
        self.mask = mask


    def parseMask(self):
        retlst = []
        for x in range(0, len(self.mask)):
            if self.mask[x] == self.maskSymbol:
                retlst.append(x)
        return retlst

    def parsePhone(self):
        pass

    def do(self):
        indexes = self.parseMask()
        phone = list(self.mask)
    
        for x in range(0, len(self.phone)):
            phone[indexes[x]] = self.phone[x]
        
        return phone
        print("".join(phone))




form = FormatTelephone("79129385839")
form.do()