python在csv模块添加新列_在Python中向多个CSV文件中添加新列（及其数据）

我必须重构你的代码，但这应该是最接近你想要实现的。您需要进行异常处理并检查行中是否有超过13个元素，等等import tempfile, os, csv

for csvFilename in os.listdir('.'):

if not csvFilename.endswith('.csv'):

continue

print('Editing file ' + csvFilename + '...')

with open(csvFilename, 'r') as csvFile:

reader = csv.reader(csvFile, delimiter=',', quotechar='"')

with open('new_' + csvFilename, 'w') as tempfile:

writer = csv.writer(tempfile, delimiter=',', quotechar='"')

header = True

for row in reader:

if (header):

row.append('ColName')

writer.writerow(row)

header = False

else:

row.append(str(row[12]) + ' ' + str(row[13]) + " some text")

writer.writerow(row)