writer=csv.writer(csvfile) #先写入columns_name writer.writerow(["index","a_name","b_name"]) #写入多行用writerows writer.writerows([[0,1,3],[1,2,3],[2,3,4]]) index a_name b_name013123234 读取csv文件用reader import csv with open("test.csv","r")ascsvfile: reader=csv.reader...
第一种:使用csv模块,写入到csv格式文件 # -*- coding: utf-8 -*- import csv with open("my.csv", "a", newline='') as f: writer = csv.writer(f) writer.writerow(["URL", "predict", "score"]) row = [['1', 1, 1], ['2', 2, 2], ['3', 3, 3]] for r in row: wri...
第一种:使用csv模块,写入到csv格式文件 1 2 3 4 5 6 7 8 9 # -*- coding: utf-8 -*- importcsv withopen("my.csv","a", newline='') as f: writer=csv.writer(f) writer.writerow(["URL","predict","score"]) row=[['1',1,1], ['2',2,2], ['3',3,3]] forrinrow: writ...
books.append(book)data=pd.DataFrame(books)# 写入csv文件,'a+'是追加模式try:ifnumber==1:csv_headers=['书名','作者']data.to_csv(fileName,header=csv_headers,index=False,mode='a+',encoding='utf-8')else:data.to_csv('fileName, header=False, index=False, mode='a+', encoding='utf-8')...
import csv 1. #python2可以用file替代open with open(“test.csv”,“w”) as csvfile: writer = csv.writer(csvfile) </span><span style="color: #008000;">#</span><span style="color: #008000;">先写入columns_name</span> writer.writerow([<span style="color: #800000;">"</span><span...
import csv #python2可以用file替代open with open("test.csv","w") as csvfile: writer = csv.writer(csvfile) #先写入columns_name #写入多行用writerows writer.writerows([["index","a_name","b_name"],[0,1,3],[1,2,3],[2,3,4]]) ...
# 写入csv文件,'a+'是追加模式 try: ifnumber ==1: csv_headers = ['书名','作者'] data.to_csv(fileName, header=csv_headers, index=False, mode='a+', encoding='utf-8') else: data.to_csv('fileName, header=False, index=False, mode='a+', ...
import csv # open the file in the write mode f = open('path/to/csv_file', 'w') # create the csv writer writer = csv.writer(f) # write a row to the csv file writer.writerow(row) # close the file f.close() 使用with 语句可以避免调用 close() 方法关闭文件,从而使得代码更加精简...
在Python中写入CSV文件可以使用csv模块。下面是一个完整的示例代码: 代码语言:txt 复制 import csv def write_to_csv(data, filename): with open(filename, 'w', newline='') as file: writer = csv.writer(file) writer.writerows(data) # 示例数据 data = [ ['Name', 'Age', 'Country'], ['...
# 写入csv文件,‘a+’是追加模式 try: if number == 1: csv_headers = [‘书名’, ‘作者’] data.to_csv(fileName, header=csv_headers, index=False, mode=‘a+’, encoding=‘utf-8’) else: data.to_csv(‘fileName, header=False, index=False, mode=’a+‘, encoding=’utf-8‘) ...