使用python获取csv文本的某行或某列数据的实例

No.,Name,Age,Score
1,Apple,12,98
2,Ben,13,97
3,Celia,14,96
4,Dave,15,95

import csv
with open('A.csv','rb') as csvfile:
 reader = csv.reader(csvfile)
 rows= [row for row in reader]
print rows

[['No.', 'Name', 'Age', 'Score'],
['1', 'Apple', '12', '98'],
['2', 'Ben', '13', '97'],
['3', 'Celia', '14', '96'],
['4', 'Dave', '15', '95']]

import csv
with open('A.csv','rb') as csvfile:
 reader = csv.reader(csvfile)
 column = [row[2] for row in reader]
print column

['Age', '12', '13', '14', '15']

import csv
with open('A.csv','rb') as csvfile:
 reader = csv.DictReader(csvfile)
 column = [row for row in reader]
print column

[{'Age': '12', 'No.': '1', 'Score': '98', 'Name': 'Apple'},
{'Age': '13', 'No.': '2', 'Score': '97', 'Name': 'Ben'},
{'Age': '14', 'No.': '3', 'Score': '96', 'Name': 'Celia'},
{'Age': '15', 'No.': '4', 'Score': '95', 'Name': 'Dave'}]

import csv
with open('A.csv','rb') as csvfile:
 reader = csv.DictReader(csvfile)
 column = [row['Age'] for row in reader]
print column

['12', '13', '14', '15']