python 读取csv文件问题

出错代码

with open('web_data.csv', 'rb') as csvfile:
    reader = csv.DictReader(csvfile)
    column = [row for row in reader]
print(column)

报错：_csv.Error: iterator should return strings, not bytes (did you open the file in text mode?)
因为此csv文件并非二进制文件， 只是一个文本文件。进行如下修改后可以解决。

改进代码

with open("web_data.csv", "rt", encoding="utf-8") as csvfile:
	reader = csv.DictReader(csvfile)
    column = [row for row in reader]
print(column)