1. python 有专门的csv包,直接导入即可. import csv: 2. 直接使用普通文件的open方法 csv_reader=open("e:/python/csv_data/log.csv" , 'r') data=[] for line in csv_reader: data.append(list(line.strip().split('|'))) for line in data: print(line) 3. 使用csv.reader & writer,返
1.CSV文件 import csv with open(r"E:\code\0_DataSet\tianchi_2015_mobile_recommand\fresh_comp_offline\tianchi_fresh_comp_train_user.csv","r+") as rdFile ,\ open("data.csv","w+",newline="") as wrFile: # writeFi
csv文件 code from xml.etree.ElementTree import Element,ElementTree,tostring import json,csv def csvtoxml(fname): with open(fname,'r') as f: reader=csv.reader(f) header=next(reader) root=Element('Daaa') print('root',len(root)) for row in reader: erow=El
一.open文件打开和with open as 文件打开的区别 file= open("test.txt","r") try: for line in file.readlines(): print(line) except: print("error") finally: file.close() with open("test.txt","r") as file: for line in file.re
可以不使用CSV模块 逐行处理: for line in open("samples/sample.csv"): title, year, director = line.split(",") print year, title 使用CSV: import csv reader = csv.reader(open("samples/sample.csv")) for title, year, director in reader: print y
读取csv文件: def readCsv(): rows=[] with file(r'E:\py\py01\Data\system.csv','rb') as f: reads=csv.reader(f) for i in reads: rows.append(i) print rows return rows写入csv文件: def writer(): with file(r'E:\py\py01\Data\system.csv','wb') as f: writer=csv.writer(
http://blog.csdn.net/azhao_dn/article/details/16989777 可能大家都遇到过,python在输出的csv文件中如果有utf-8格式的中文,那么在使用excel打开该csv文件时,excel将不能够有效识别 出文件中的中文数据,严重时甚至不能够识别出分隔符.那么,要怎样操作才能够让excel识别出utf-8格式的中文呢?方法其实很简单,见以下代码: import codecs with open('ExcelUtf8.csv', 'w') as f
并行进程怎么使用? import os import sys import time def processFunc(i): time.sleep(10-i) print i if __name__=='__main__': from multiprocessing import Pool pool=Pool() for i in range(0,10): print i print '----------------split line-----------------' for i in r
下面是一个简单的csv文件 Title,Release Date,Director And Now For Something Completely Different,1971,Ian MacNaughton Monty Python And The Holy Grail,1975,Terry Gilliam and Terry Jones Monty Python's Life Of Brian,1979,Terry Jones Monty Python Live At The Hollyw
1.什么是csv文件 The so-called CSV (Comma Separated Values) format is the most common import and export format for spreadsheets and databases. CSV format was used for many years prior to attempts to describe the format in a standardized way in RFC 4180. 2.