Question

我的代码中有一个函数需要两个参数

def cost_per_student(nparrloans,nparrrecipients): 
  nparrloanperstudent = (nparrloans)*1000000000/(nparrrecipients)*1000000
  return nparrloanperstudent

每当我运行我的代码时，它都会转到此函数，说我的nonetype和int有不受支持的操作数。有没有办法使之成为可能，我尝试将nonetypes转换为int但无济于事

这是我其余的代码

from csv import * 
import numpy as np 
import matplotlib.pyplot as plt 

#Step 5 
def read_data(filename): 
  try: 
    array = np.genfromtxt("filename", delimiter=',', usecols=(1,2,3,4,5,6)) 
  except IOError: 
    print("File not found") 

#Step 6 
def cost_per_student(nparrloans,nparrrecipients): 
  nparrloanperstudent = (nparrloans) *1000000000/(nparrrecipients)*1000000
  return nparrloanperstudent 

#Step 7 
def read_labels(filename): 
  labels= [] 
  try: 
    labelFile = open(filename, "r") 
    for line in labelFile: 
      line.strip() 
      line.title() 
      lables.append(line) 
    labelFile.close() 
  except IOError: 
    print("Label file not found") 
  return labels 

#Step 8 
def display_amounts_whole(npdata, labels, title): 
  labels = labels 
  sizes = npdata 
  plt.title(title) 
  plt.show() 

#Step 9 
def write_averages_to_file(filename,labels,averages): 
  if len(labels) == len(averages): 
    try: 
      file = open(filename, ' w' , newline='') 
      csvfile  = csv.writer(file, delimiter = ',') 
      for i in range(len(labels)): 
        csvfile.writerow(labels, averages) 
      csvfile.close() 
    except IOError: 
      print("Output file not valid") 
  else: 
    print("Labels do not match average") 

#Step 10 
def main(): 
  loanamts = read_data("Loan_amounts_by_type_data.csv") 
  population = read_data("Loan_amounts_by_type_number.csv") 
  dataLabels = read_labels("loan_types.txt") 
  calculation = cost_per_student(loanamts, population) 
  display_amounts_whole(population, dataLabels, "Loan Amounts by Type\n4th 
    Quarter 2017")  

#Step 11 
if __name__ == "__main__": 
  main()

Answer 1

调用函数时，其中一个值（nparrloans，nparrrecipients）为none。

如果您确定自己的代码正确，那么我认为它需要一些组织，因此，当您调用

同时定义了两个参数（nparrloans，nparrrecipients）的函数。

类型和整数操作数

1 个答案: