writer.writerows([["index","a_name","b_name"],[0,1,3],[1,2,3],[2,3,4]]) 内容为 index,a_name,b_name0,1,31,2,32,3,4 读取csv文件用reader #coding=utf-8import csv with open("test.csv","r")ascsvfile: reader=csv.reader(csvfile) #这里不需要readlinesforlineinreader: print...
Although not adhering to Python's conventions, this method for dealing with CSV data is functional. To utilize it, we must open a CSV file in write mode and insert our data into the file one line at a time. The code snippet below demonstrates a successful application of this approach. da...
with open("/路径/文件名.csv","w") as csvfile: #'w'表示写操作,有则修改,无则新建 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. ...
#写入多行用writerows writer.writerows([[0,1,3],[1,2,3],[2,3,4]]) index a_name b_name0 1 3 1 2 3 2 3 4 读取csv文件用reader importcsvwithopen("test.csv","r")ascsvfile: reader = csv.reader(csvfile)#这里不需要readlinesforlineinreader:printline...
dw.writerow(dict1) dw.writerow(dict2) 运行上面的代码,打开得到的【2班成绩单.csv】文件,如下所示: 2没有空行 此时输出的结果就没有空行。 这是因为我在with open 语句中增加了newline=""参数。 # 以自动关闭文件的方式创建文件对象 with open(file_path, 'w', encoding='utf-8', newline="") as...
line='')>>>csvWriter=csv.writer(csvFile,delimiter='\t',lineterminator='\n\n')# ➊>>>csvWriter.writerow(['apples','oranges','grapes'])24>>>csvWriter.writerow(['eggs','bacon','ham'])17>>>csvWriter.writerow(['spam','spam','spam','spam','spam','spam'])32>>>csvFile....
>>>withopen(csv_path,'w',newline='')asf:writer=csv.writer(f)forrowindata:writer.writerow(row) 回车后,后面会有一些杂杂的返回,属于干扰项无需理会,我们关注的是生成CSV文件。 注意几点: 参数w,表示写入,不加则默认是读r。 newline='',不加这个参数的话,结果会有冗余的空行,可以尝试一下。
In this article we show how to read and write CSV data with Python csv module. CSVCSV (Comma Separated Values) is a very popular import and export data format used in spreadsheets and databases. Each line in a CSV file is a data record. Each record consists of one or more fields, ...
writer.writerows(data) # 关闭csv对象 csvfile.close() 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 2、csv读取 读取csv文件,读取函数有reader和DictReader,两者都是接收一个可迭代的对象,返回一个生成器。reader函数是将一行数据以列表形式返回;DictReader函数返回的是一个字典...
= [["SN","Name","Contribution"], [1,"Linus Torvalds","Linux Kernel"], [2,"Tim Berners-Lee","World Wide Web"], [3,"Guido van Rossum","Python Programming"]]withopen('innovators.csv','w', newline='')asfile: writer = csv.writer(file, delimiter='|') writer.writerows(data_list...