错误：'set' 对象没有属性.. - Python3

Question

我正在开发一个程序，该程序需要从 pandas 中获取我在表中的行，并将每一行存储为字典条目，其中一列作为键，其他存储在具有该键的对象中。它似乎工作正常，当它循环将它们添加到字典时我没有收到任何错误，但是如果我尝试使用 SeqDict['key'].classattribute 之类的语法从该字典中调用特定项目，我会收到一个错误说“'set'对象没有属性'classattribute'。我使用了错误的语法还是我的代码有其他问题？这是我第一次尝试编程，如果我犯了一个愚蠢的错误或我的代码写得很低效。

我的代码的前半部分似乎工作正常

import os
import pandas as pd

print("Please move your CSV to the desktop before continuing.")
csvfilename = input("Enter the name of your CSV file: ")
desktopfilepath = os.path.expanduser("~/Desktop/")
csvfilepath = desktopfilepath + csvfilename

seqtable = (pd.read_csv(csvfilepath, 
                    dtype=str, 
                    header=0, 
                    usecols=["Well", "Core Sample ID", "Sample ID", "Exon"]))

newseqtable = pd.DataFrame.dropna(seqtable)
print(newseqtable)

y = len(newseqtable.index)
print(y, "files to rename.") 

我假设这部分是我做错的地方

class SeqID:
    def __init__(self,well,sequence,exon):
        self.well = well
        self.sequence = sequence
        self.exon = exon
SeqDict = {}

x = 0
for x in range(y):
    ID = newseqtable.iat[x,1]
    well = newseqtable.iat[x,0]
    sequence = newseqtable.iat[x,2]
    exon = newseqtable.iat[x,3]
#    print(ID + "," + well + "," + sequence + "," + exon + ".") #This works fine when I choose to run it
    SeqDict[ID] = {SeqID(well,sequence,exon)}
SeqDict  #This prints the dictionary keys I would expect

SeqDict['key'].well  # This returns the error when I insert a key

谢谢

Answer 1

这一行：

SeqDict[ID] = {SeqID(well,sequence,exon)}

创建一个 1-set。您可能的意思是：

SeqDict[ID] = SeqID(well,sequence,exon)