python - 如何从文件夹内的 n 个 csv 文件导入数据？

Question

[Python 帮助]

您好，我需要一些帮助来了解如何从文件夹内的 n 个文件导入数据。当我尝试提取实际数据时，出现错误，指出文件/目录不存在。

import os, csv
path = ("my directory")
files = sorted(os.listdir(path)) 


def f():
    for file in (files):
         with open(file, 'r') as csvfile:
                    data = csvfile.read
                    print(data)

OUTPUT:

 File "<ipython-input-158-1f4c11da5a68>", line 1, in <module>
    f()
 File "<ipython-input-157-b977510dbfcd>", line 8, in f
    with open(file, 'r') as csvfile:

FileNotFoundError: [Errno 2] No such file or directory: '.csv'

Answer 1

os.listdir 仅返回文件名，不返回路径名，因此打开文件时需要将路径名与文件名连接起来。

更改:

with open(file, 'r') as csvfile:

至:

with open(os.path.join(fcm_path, file), 'r') as csvfile: