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...
data= pd.read_csv('test.csv') 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"...
importcsv# 导入CSV模块# 准备一维数据data=['Alice','Bob','Charlie','David']# 一维数据列表# 打开CSV文件withopen('data.csv',mode='w',newline='')asfile:# 以写入模式打开writer=csv.writer(file)# 创建一个csv写入器writer.writerow(data)# 将一维数据写入到CSV 1. 2. 3. 4. 5. 6. 7. 8...
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.
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, ...
# 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', 'Country'], ['John', '25', 'USA'], ['Alice', '30', 'Canada'], ['Bob', '35', 'UK'] ] filename = 'data.csv' with open(filename, 'w', newline='') as file: writer = csv.writer(file) writer.writerows(data) print(f'Data has...
其次,调用 writer() 函数创建一个 CSV writer 对象。 然后,利用 CSV writer 对象的 writerow() 或者writerows() 方法将数据写入文件。 最后,关闭文件。 以下代码实现了上面的步骤: import csv # open the file in the write mode f = open('path/to/csv_file', 'w') # create the csv writer writer...