以下是一些最小的完整示例，这些示例如何读取CSV文件以及如何使用Python编写CSV文件。
Python 2 + 3：读取CSV文件
Python
# -*- coding: utf-8 -*-import csvimport sys# Define datadata = [(1, "A towel,", 1.0), (42, " it says, ", 2.0), (1337, "is about the most ", -1), (0, "massively useful thing ", 123), (-2, "an interstellar hitchhiker can have.", 3)]# Write CSV filekwargs = {'newline': ''}mode = 'w'if sys.version_info < (3, 0): kwargs.pop('newline', None) mode = 'wb'with open('test.csv', mode, **kwargs) as fp: writer = csv.writer(fp, delimiter=',') # writer.writerow(["your", "header", "foo"]) # write header writer.writerows(data)# Read CSV filekwargs = {'newline': ''}mode = 'r'if sys.version_info < (3, 0): kwargs.pop('newline', None) mode = 'rb'with open('test.csv', mode, **kwargs) as fp: reader = csv.reader(fp, delimiter=',', quotechar='"') # next(reader, None) # skip the headers data_read = [row for row in reader]print(data_read)之后，的内容data_read是
[['1', 'A towel,', '1.0'], ['42', ' it says, ', '2.0'], ['1337', 'is about the most ', '-1'], ['0', 'massively useful thing ', '123'], ['-2', 'an interstellar hitchhiker can have.', '3']]
Unipre和Python 2.X
如果要编写Unipre，则必须安装uniprecsv。千万不能用打开文件precs.open，而只是用open。用写
import uniprecsv as csv# Write CSV filewith open('test.csv', 'w', newline='') as fp: writer = csv.writer(fp, encoding='utf-8') # writer.writerow(["your", "header", "foo"]) # write header writer.writerows(data)
