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python rEAD Csv

python2下: 1234 # -*- coding: utf-8 -*- import pandas as pdmydata = pd.read_csv(u"例子.csv") #前面加u,第一行的编码必须utf-8 原本以为这一点python3和python2是一样的,其实不一样! python3下: 1234567 # -*- coding: utf-8 -*- impo...

用pandas库, import pandas as pddata = pd.read_csv('train.csv')train_data = data.values[0:TRAIN_NUM,1:]train_label = data.values[0:TRAIN_NUM,0] study.163.com/course/courseMain.htm?courseId=1000035 机器学习正好讲了这个手写识别的...

这两天刚好看到,Python CookBook上有说到。这里是三种读取csv的方法。 文件格式是这样的 Region,DATE_,RAW_ACU zh_ch,Jan 27 2017,208172 import csvfrom collections import namedtuple # with open('data.csv') as f:# f_csv = csv.reader(f)...

csv文件就是按逗号分隔的文本, 可以用python自带的读取文本的方式, 不过我推荐用pandas包, 读写都很方便 # coding=utf-8# 传统方式# 读f1 = open('1.csv', 'r').readlines()result = map(lambda x: x.strip().split(','), f)# 写f2 = open('1.cs...

csv文件就是按逗号分隔的文本, 直接读就行 with open('1.csv', 'r') as f: result = map(lambda x: x.strip().split(','), f.readlines()) print(result)

import csvwith open('eggs.csv', newline='') as csvfile: spamreader = csv.reader(csvfile, delimiter=',', quotechar=',') for row in spamreader: print(', '.join(row))

class DBI(object): """database interface""" def __init__(self, conn): """keep connection""" self._conn = conn def store(self, sql, data): """store data into database with given sql""" curr = self._conn.cursor() curr.executemany...

import csvwith open('1.csv', 'r') as csvfile: data = csvfile.readlines()total={}for d in data: _,k,v=d.split(',') if total.get(k) != None: total[k]+=int(v) else: total[k]=int(v) for k,v in total.items(): print(k,'\t',v)

这两天刚好看到,Python CookBook上有说到。这里是三种读取csv的方法。 文件格式是这样的 Region,DATE_,RAW_ACU zh_ch,Jan 27 2017,208172 import csvfrom collections import namedtuple# with open('data.csv') as f:# f_csv = csv.reader(f)#...

python中有一个读写csv文件的包,直接import csv即可。利用这个python包可以很方便对csv文件进行操作,一些简单的用法如下。 读文件 csv_reader = csv.reader(open('data.file', encoding='utf-8')) for row in csv_reader: print(row) 例如有如...

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