如何使用.csv文件创建字典并将其用作功能？

Question

我有一个导入的.csv文件，基本上我需要从.csv文件创建字典并将其与现有代码一起使用。我希望能够将其用作函数，并在需要时调用新字典及其值。这是我到目前为止的内容：

csv文件内容：

  

成交量52周高52周低股息收益率PE_Ratio
  150.75 41.03 233.47 142 1.97％12.34
  98.65 3.23 114.55 87.54 1.60％23.03
  340.53 4.74 394.28 292.47 2.51％19.03
  129.77 4.2 173.24 112.06 2.68％20.15
  111.77 5.67 133.88 100.22 4.04％14.8
  111.42 8.73 120.2 97.68 1.61％13.05
  175.37 2.69 275.31 151.7 1.83％12.31
  177.89 4.72 215.43 158.09 2.37％18.85
  119.83 4.76 171.13 105.94 5.35％18.65
  47.74 22.75 57.5995 42.04 2.54％14.44

代码段

import csv
#import csv file.
    invest_dict = 'DOW_Stock_short.csv'


    with open(invest_dict , 'r') as invest_obj:
        invest_dict = 'DOW_Stock_short.csv'
        invest_reader = csv.reader(invest_obj)
        result = {}
        for row in invest_reader:
            if invest_reader.line_num !=1:
                key = row[0]
                result[key] = row[1]
        print(result)






    print("The purpose of this project is to provide Stock Analysis by reading \n the data from a csv file and performing analysis on this data.")
    def Greeting():
        print(".........Welcome.............")




    def Conversions(investment_amount):



          investment_amount = float(investment_amount)

          Euro = float(round(investment_amount / 1.113195,2) )

          Pound = float(round(investment_amount / 1.262304,2) )

          Rupee = float(round(investment_amount / 0.014316,2) )

          print("The amount you invest in euro is:  {:.2f}" .format(Euro) )
          print("The amount you invest in pounds is:  {:.2f}" .format(Pound) ) 
          print("The amount you invested in Rupees is:  {:.2f}" .format(Rupee) )




    def minimum_stock():
        key_min = min(result, key = (lambda k: result[k]))
        print("The lowest stock you can buy is: ",result[key_min])



    def maximum_stock():
        key_max = max(result, key = (lambda k: result[k]))
        print("The highest stock you may purchase is: ",result[key_max])



    def invest_range(investment_amount):
                new_list = []
                new_list = [i for i in result if i > 50 and i < 600]
                return(sorted(new_list))
    answer = 'yes'

    while answer:



    print(Greeting())

    try:
        investment_amount = float(input("Please enter the amount you want to invest:$ "))
        print("Thank you for investing:$ {:,.2f}".format(investment_amount))
    except:
        print("Please enter a valid amount...")
        continue 

    print(Conversions(investment_amount))






    for i in result:
        i = investment_amount
        if i <25:
            print("Not enough funds to purchase stock")
            break
        elif i>25 and i <250:
            print(minimum_stock())
            break
        elif i >= 250 and i <= 1000:
            print(maximum_stock())
            break

    print("This is the range of stocks you may purchase: ", invest_range(investment_amount))

    answer = input("Would you like to complete another conversion? yes/no " )
    if answer == 'no':
        print("Thank you for investing.")
        break