importcsv# encoding是打开(读取)文件的编码方式withopen('D:\\work\\test\\csv\\books.csv',encoding='utf-8')asfile_obj:reader_obj=csv.reader(file_obj)# 以列表形式读取print(reader_obj)# 返回读取器对象forrowinreader_obj:# 以list形式返回一行print(row)# 输出<_csv.readerobjectat0x00000234C16F...
我们要完整读取其内容,代码如下: import csv # open file by passing the file path. with open('files/data.csv', 'r') as csv_file: csv_read = csv.reader(csv_file, delimiter=',') #Delimeter is comma count_line = 0 # Iterate the file object or each row of the file for row in csv...
reader=csv.DictReader(f) print reader out:<unicodecsv.py2.DictReader instance at 0x0000000009AA07C8> 打印所有行: import csv with open('enrollments.csv','rb')asf: reader=csv.DictReader(f) enrollments= list(reader) import csv with open('enrollments.csv','rb')asf: reader=csv.DictReader(f...
reader = csv.DictReader(f,fieldnames=['new_id','new_name','new_age'],restkey='hobby') head_row = next(reader) # next用于移动指针 print(reader) # <csv.DictReader object at 0x000002241D730FD0> for line in reader: # reader为了方便理解我们可以把它看成是一个列表嵌套OrderedDict(一种长相...
<_csv.reader object at 0x000001FB8CE655F8> 改正代码如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 import csv with open('person.csv', 'r', encoding='utf-8') as file_obj: # 1.创建reader对象 reader = csv.reader(file_obj) # 2.遍历进行读取数据 for r in reader: print(r...
read_object=csv.reader(fileread)#创建读取对象 header=next(read_object,None) for row in read_object: row_counter+=1 print("{0!s}\t{1:d}\t{2:d}".format(os.path.basename(input_file),row_counter,len(header))) file_counter+=1 ...
import csv filename = "my_data.csv" fields = [] rows = [] # Reading csv file with open(filename, 'r') as csvfile: # Creating a csv reader object csvreader = csv.reader(csvfile) # Extracting field names in the first row
我们先来看一种简单读取方法,先用csv.reader()函数读取文件的句柄f生成一个csv的句柄,其实就是一个迭代器,我们看一下这个reader的源码: 喂给reader一个可迭代对象或者是文件的object,然后返回一个可迭代对象。 首先读取csv 文件,然后用csv.reader生成一个csv迭代器f_csv ...
csv的读取 通过reader()读取 import csvwith open('person.csv', 'r', encoding='utf-8') as file_obj:# 1.创建reader对象reader = csv.reader(file_obj)print(reader) 如果直接打印会返回csv.reader对象,这时需要遍历列表 <_csv.reader object at 0x000001FB8CE655F8> ...
c = open(“test-01.csv”, “w”, encoding=“utf8”, newline=’’) 2.CSV文件读 基本流程如下: 导入CSV模块 创建一个CSV文件对象 读取CSV文件 关闭文件 # -*- coding: utf-8 -*-importcsv c=open("test-01.csv","r",encoding="utf8")#读文件reader=csv.reader(c)forlineinreader:print(lin...