Python读写CSV文件

import csv
with open('temp.csv','rb') as f:
reader = csv.reader(f)
for row in reader:
print row

import csv
with open('temp.csv','wb') as f:
writer = csv.writer(f)
writer.writerow(['a','b','c'])
writer.writerow(['d','e','f'])

import csv
with open('temp.csv') as f:
reader = csv.DictReader(f)
for row in reader
print(row['first_name'],row['last_name'])

import csv
with open('temp.csv','w') as f:
fieldnames = ['first_name','last_name']
writer = csv.DictWriter(f, fieldnames=fieldnames)

writer.writeheader()
writer.writerow({'first_name':'ryan', 'last_name':'xu'})
writer.writerow({'first_name':'koko', 'last_name':'xu'})

import csv, sys
filename = 'some.csv'
with open(filename, 'rb') as f:
reader = csv.reader(f)
try:
for row in reader:
print row
except csv.Error as e:
sys.exit('file %s, line %d: %s' % (filename, reader.line_num, e))

csvreader.next()
csvreader.line_num
csvreader.fieldnames

csvwriter.writerow(row)
csvwriter.writerows(rows)
csvwriter.writeheader()