Python Pandas添加Filename Column CSV

Question

我的python代码在下面的示例中正常工作.我的代码组合了一个CSV文件目录并匹配标题.但是,我想更进一步 - 如何添加一个附加所用CSV文件名的列？

import pandas as pd
import glob

globbed_files = glob.glob("*.csv") #creates a list of all csv files

data = [] # pd.concat takes a list of dataframes as an agrument
for csv in globbed_files:
    frame = pd.read_csv(csv)
    data.append(frame)

bigframe = pd.concat(data, ignore_index=True) #dont want pandas to try an align row indexes
bigframe.to_csv("Pandas_output2.csv")

Answer 1

这应该工作:

import os

for csv in globbed_files:
    frame = pd.read_csv(csv)
    frame['filename'] = os.path.basename(csv)
    data.append(frame)

frame['filename']创建一个名为的新列filename,os.path.basename()并将路径/a/d/c.txt转换为文件名c.txt.