python csv模块dictwrite_Pythoncsv.DictWriterwriterow（）返回
我正在使用一个csv文件来操作Python的文件。我想打开csv文件，操作它（从某些人工制品中清除它），将更改写入另一个文件，完成。在
我在写作方面有困难。我不确定我是否在使用csv.DictWriter正确地。我的代码的最后一行产生错误：TypeError: init() takes at least 3 arguments (2 given)
为什么我得到这个错误？在import csv
dataSource = 'dentistData.csv'
dataTarget = 'test.csv'
with open(dataSource) as source, open(dataTarget) as target:
reader = csv.DictReader(source, delimiter=",", quotechar='"')
writer = csv.DictWriter(target, delimiter=',')
for row in reader:
#if dentist_type is empty, add the type PRV (private dentist)
if not row['dentist_type']:
row['dentist_type']='PRV'
print(row['dentist_type'])
#remove lgh from street field
writer.writerow(row)