我试图创建一个csv文件，并在阅读该文件之前存储姓名，电子邮件地址和电话号码，并将数据放入列表并输出。但是，如果我不将csv_writer变量改写为空（csv_writer =“”），则阅读部分不会遍历文件，而是跳过并输出一个空列表。这个csv_writer变量不为空的存在导致我的csv_reader变量被保存而<_csv.reader object at 0x0000019A529D7EE0>不是<_csv.Dialect object at 0x000002C86E6921C0>。我的代码在下面，如果它有帮助的话。

# Writing to CSV files

import csv

headings = ["Name", "Email", "Phone"]
names_list = [["Fred","[email protected]","01909-9098645"], ["Sue","[email protected]","01986-3937586"], ["John","[email protected]","01892-3983753"], ["Beth","[email protected]","230492843"], ["beth","bth@3409ldf","3098430432"], ["Bob","[email protected]","2304982304"], ["Joe","joe*0394","230482304"]]
csv_file = open("names.csv", "w", newline = "")
csv_writer = csv.writer(csv_file, delimiter = ",", quotechar = "|")
csv_writer.writerow(headings)
for data in names_list:
    csv_writer.writerow(data)

csv_file.close



csv_writer = "" # Removing this causes the following code to malfunction (outputting [])


# Reading CSV files

import csv

names_list = []
csv_file = open("names.csv", "r", newline = "")
csv_reader = csv.reader(csv_file, delimiter = ",", quotechar = "|")
for data in csv_reader: # This is the loop which gets skipped when csv_writer doesn't get overwritten
    if csv_reader.line_num == 1:
        headings = [data[0], data[1], data[2]]
    else:
        name = [data[0], data[1], data[2]]
        names_list.append(name)

 csv_file.close

 print(names_list)