writer = csv.writer(csvfile)# 写入数据 writer.writerow(['Name', 'Age', 'Score'])writer.writerow(['Alice', 20, 90])writer.writerow(['Bob', 21, 85])```在这个例子中，我们首先创建了一个新的 CSV 文件 `data.csv`，然后创建了一个 CSV 写入器 `writer`。最后，我们使用 `writerow()` ...
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...
importcsv#定义要写入CSV文件的数据data =[ ['Name','Age','City'], ['Alice','25','New York'], ['Bob','30','San Francisco'],#...]#打开CSV文件以写入数据with open('output.csv','w', newline='') as file: writer=csv.writer(file)#写入CSV文件的每一行forrowindata: writer.writerow...
import csv # 要写入的数据 data = [ ['姓名', '年龄', '城市'], ['张三', 28, '北京'], ['李四', 34, '上海'], ['王五', 25, '广州'] ] # 将数据写入CSV文件 with open('output.csv', 'w', newline='', encoding='utf-8') as file: writer = csv.writer(file) writer.writero...
import csv with open('protagonist.csv', 'w', newline='') as file: writer = csv.writer(file) writer.writerow(["SN", "Movie", "Protagonist"]) writer.writerow([1, "Lord of the Rings", "Frodo Baggins"]) writer.writerow([2, "Harry Potter", "Harry Potter"]) When we run the ab...
write=csv.writer(csvfile) write.writerow(data) #写入一行操作,data为可迭代类型,如果为字符串,则单个字符为一个元素 write.writerows(data) #写入多行操作,data中一个元素为一行 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 在使用with open(),打开文件时,’w’表示写操作,有则修改,无...
这一次的表头header = ["标题", "发布时间"]# 使用文件对象和表头初始化 DictWriter 对象writer = CSV.DictWriter(fo, header)# 写入表头writer.writeheader()# 将上一步计算的字典列表写入 CSV 文件中writer.writerows(news_dict_list)# 关闭文件对象fo.close()执行之后，在源代码文件夹下会生成 news.CSV ...
import csv 1. #python2可以用file替代open with open(“test.csv”,“w”) as csvfile: writer = csv.writer(csvfile) #先写入columns_name writer.writerow(["index","a_name","
withopen(birth_weight_file,"w",newline='')asf:#withopen(birth_weight_file,"w")asf:writer=csv.writer(f)writer.writerows([birth_header])writer.writerows(birth_data)f.close() 常见错误 list index out of range 其中我们重点需要讲的是with open(birth_weight_file, "w", newline='') as f...