Python - TypeError：+： 'type'と 'int'のためのサポートされていないオペランドタイプ

Question

私はGreenflyというクラスを作成しました。このクラス内では、get_generations関数は整数値を受け入れることになっています。後で私のコードで、runmodel()の変数self.generationsを使用しようとすると、以下のエラーが表示されます。

Traceback (most recent call last): 
    File "C:/Users/User/Documents/SCHOOL/C SCIENCE/Population model/Proper iteration.py", line 123, in <module> 
    juvenile.runmodel() 
    File "C:/Users/User/Documents/SCHOOL/C SCIENCE/Population model/Proper iteration.py", line 46, in runmodel 
    for n in range(1,g + 1): 
TypeError: unsupported operand type(s) for +: 'type' and 'int' 

class Greenfly: 
    def get_generations(self): 
     self.generations = int(input("Enter no. of generations:")) 
     while self.generations < 5 or self.generations > 25: 
      try: 
       self.generations = int(input("Please enter a whole number greater than 5 and less than 25.\n")) 
       if self.generations > 5 or self.generations < 25: 
        pass 
       else: 
        self.generations = int(input("Please enter a number greater than 5 and less than 25.\n")) 
      except ValueError: 
       print("This is not accepted.") 
       break 

def runmodel(self): 
    # i == because the first generation is generation 0# 
    i = 0 
    g = self.generations 
    alteredpopulation = self.population * self.survival_rate 
    for n in range(1,g + 1): 
     i += 1 
     if i == self.generations: 
      print("Generation Zero Population:", self.population) 
      for n in range(i): 
       print(alteredpopulation) 
       alteredpopulation *= self.survival_rate 

メインプログラムにどのように適合しているかを確認したい場合は、これはすべて自分のコードです。私はクラスを適切に使用しているのかどうかはわかりませんが、グローバル変数を使用したくないのは、それが 'pythonic'ではないからです。要するに

import sys 

class Greenfly: 

    population = float 
    survival_rate = float 
    birth_rate = float 
    generations = int 

    def getattributes(self): 
     self.population = float(input("Enter population numbers:")) 
     self.survival_rate = float(input("Enter survival rate:")) 

    def get_birthrate(self): 
     self.birth_rate = float(input("Enter birth rate:")) 

    def get_generations(self): 
     self.generations = int(input("Enter no. of generations:")) 
     while self.generations < 5 or self.generations > 25: 
      try: 
       self.generations = int(input("Please enter a whole number greater than 5 and less than 25.\n")) 
       if self.generations > 5 or self.generations < 25: 
        pass 
       else: 
        self.generations = int(input("Please enter a number greater than 5 and less than 25.\n")) 
      except ValueError: 
       print("This is not accepted.") 
       break 

    def displayattributes(self): 
     print("Population:", int(self.population)) 
     print("Survival rate:", float(self.survival_rate)) 

    def displayothers(self): 
     print("Birthrate:", float(self.birth_rate)) 
     print("No. of generations:", int(self.generations)) 

    def runmodel(self): 
     # i == because the first generation is generation 0# 
     i = 0 
     g = self.generations 
     alteredpopulation = self.population * self.survival_rate 
     for n in range(1,g + 1): 
      i += 1 
      if i == self.generations: 
       print("Generation Zero Population:", self.population) 
       for n in range(i): 
        print(alteredpopulation) 
        alteredpopulation *= self.survival_rate 

class Mainframe(Greenfly): 

    def settings(self): 
     self.defaultSettings = int(input("\n[1] Set Generation 0 values." 
             "\n[2] Display Generation 0 values." 
             "\n[3] Disease factor." 
             "\n[4] Run model." 
             "\n[5] Export data." 
             "\n[6] Exit.\n")) 

    def resetmenu(self): 
     returnbutton = input("Press any key to return to the menu.") 
     Mainframe.settings(self) 

    def diseasefactor(self): 
     print("The disease factor works.") 
     Mainframe.resetmenu(self) 

    def exportdata(self): 
     print("Check excel for popualtion data.") 
     Mainframe.resetmenu(self) 

print("AQA Population Model") 
x = Mainframe() 
x.settings() 
juvenile = Greenfly() 
adult = Greenfly() 
senile = Greenfly() 

while True: 
    try: 
     if x.defaultSettings == 1: 
      print("Set Generation Zero values.\n") 
      print("Juvenile:") 
      juvenile.getattributes() 
      print("\n") 

      print("Adult:") 
      adult.getattributes() 
      print("\n") 

      print("Senile:") 
      senile.getattributes() 
      print("\n") 

      print("Birth rate:") 
      x.get_birthrate() 
      print("No. of generations:") 
      x.get_generations() 
      x.resetmenu() 
     elif x.defaultSettings == 2: 
      print("Generation Zero values are as follows:") 
      print("Juvenile:") 
      juvenile.displayattributes() 
      print("Adult:") 
      adult.displayattributes() 
      print("Senile:") 
      senile.displayattributes() 
      x.displayothers() 
      x.resetmenu() 

     elif x.defaultSettings == 3: 
      x.diseasefactor() 
      x.resetmenu() 
     elif x.defaultSettings == 4: 
      juvenile.runmodel() 
      adult.runmodel() 
      senile.runmodel() 
      x.resetmenu() 
     elif x.defaultSettings == 5: 
      x.exportdata() 
      x.resetmenu() 
     elif x.defaultSettings == 6: 
      sys.exit("Thank you for using the AQA population model") 
     else: 
      print("Unable to compute your request.") 
      x.resetmenu() 
    except ValueError: 
     print("Not allowed.") 
     # This does not work if the first input is a float or string. Only works for integers. # 

Answer 1

、あなたはself.generationが整数であることを確認する必要があり、それはエラーあなたは、いくつかの方法で行うことができます

def run_model() 
     g = self.generation # make sure it is an integer 

を意味するものである：

@property 
    def generation(self): 
     return self.get_generation() 

    def get_generation(self): 
     #keep current code of input 
     # define generation variable here 
     return generation # add a return here