Python读写csv格式文件

import csv
fp = open(r'F:\fish\sample.csv','r')
rdcsv = csv.reader(fp,dialect='excel')
for row in rdcsv:
print row              #输出csv文件中每行的内容
fp.close()

import numpy as np
import csv
wfp =  open(r'F:\kaggle\fish\sample.csv','wb')
n = np.random.randn(100,6)                 #随机生成100*6的矩阵
ww = csv.writer(wfp, dialect='excel')
for r in range(len(n))：
ww.writerow(n[r,:])          #将矩阵中每行数据依次写入csv文件中
wfp.close()