我有这段Python代码:
import csv
def analyse(csvFileToRead, csvFileToWrite):
# open file to read
openedCsvFileToRead = open(csvFileToRead)
reader = csv.reader(openedCsvFileToRead)
# open file to write
openedCsvFileToWrite = open(csvFileToWrite)
writer = csv.writer(openedCsvFileToWrite)
for row in reader:
date = row[8]
if date[0] == "5":
writer.writerow(row)
# close file
openedCsvFileToRead.close()
openedCsvFileToWrite.close()
if __name__ == "__main__":
analyse("mydata.csv", "mynewdata.csv")
当我使用Python 3.4运行时,会得到以下错误信息:
Traceback (most recent call last):
File "main.py", line 40, in <module>
analyse("mydata.csv", "mynewdata.csv")
File "main.py", line 25, in analyse
writer.writerow(row)
io.UnsupportedOperation: not writable
我到底做错了什么? 我在64位的Windows 7上操作。