read_csv 'NoneType' object has no attribute
Hi, so I created a csv file with the following code: 
df = pd.DataFrame(Listing_Data1, columns = Field1)
df.to_csv('Listing_my.csv',  sep=",", index = False)

Everything looks right in the csv file. However, when I read the csv file using the following code:
with open('Listing_my.csv',, 'r') as f: #, encoding="utf8"
        reader = csv.reader(f, delimiter=',')
        Field = next(reader) 
        Listing_Data =  pd.read_csv('Listing_my.csv', usecols=Field)

When I tried to access to one of the attribute (i.e. Listing_Data.room_type). I got the following error message: 
'NoneType' object has no attribute 'room_type'

May I know what's going on? 
