fileName='PythonBook.csv'number=1books=[]book={'title':'笑傲江湖','author':'金庸',}# 如果 book 条数足够多的话,pandas 会每次往文件中写50条数据。 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...
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...
writer = csv.DictWriter(csvfile, fieldnames=fieldnames) writer.writeheader() writer.writerow({'first_name': 'Baked', 'last_name': 'Beans'}) writer.writerow({'first_name': 'Lovely', 'last_name': 'Spam'}) writer.writerow({'first_name': 'Wonderful', 'last_name': 'Spam'}) 1. 2....
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...
会得到一个DataFrame类型的data,不熟悉处理方法可以参考pandas十分钟入门 另一种方法用csv包,一行一行写入 import csv #python2可以用file替代open with open("test.csv","w")ascsvfile: writer=csv.writer(csvfile) #先写入columns_name writer.writerow(["index","a_name","b_name"]) ...
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, ...
writer = csv.writer(csvfile,lineterminator='\n') #first write columns_name writer.writerow(["column1","column2","column3"]) #then write data writer.writerows([r1,r2,r3,r4]) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
# 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‘) ...
但是我不确定现在如何正确地将每一行写入CSV 编辑--->感谢您所提供的反馈,该解决方案非常简单,可以在下面看到。 解: import StringIO s = StringIO.StringIO(text) with open('fileName.csv', 'w') as f: for line in s: f.write(line)
import csv data = [ ['Name', 'Age', 'City'], ['John', '25', 'New York'], ['Alice', '30', 'San Francisco'], ['Bob', '35', 'Seattle'] ] filename = 'data.csv' with open(filename, 'w', newline='') as file: writer = csv.writer(file) writer.writerows(data) print...