Question

i am new in python and wondering how i can use filename as variable I have multiple csv file contain stock price data and files name are timestamp something like this 20171205144050 (time stamp in yyyymmddhhmmss) now i want to use time as variable in this case 20171205144050 my ultimate goal is to extract stock price and time

image of directory and file formation

Answer 1

假设你有一堆* .csv文件，你可以使用类似下面的内容

import glob
import csv

files = glob.glob("./*.csv")
for file in files:
    with open(file, 'rb') as csvfile:
        csvReader = csv.reader(csvfile, delimiter=',')
        for row in csvReader:
            print row

Answer 2

在这种情况下，

更有意义

将文件夹中的csv文件列表添加到列表中
生成一个字典，用于获取每个列表项，并读取与名称关联的文件作为键，文件内容作为值

您可以使用globals（）并使用它来生成变量名称，但我建议不要使用它

globals()['somevar'] = 'someval'
print somevar  # prints 'someval'

相反，尝试这样的事情

import glob
import csv

files = glob.glob("./*.csv")
myfiles = dict()
for file in files:
    with open(file, 'rb') as csvfile:
        myfiles[file.split('.')[0]] = csv.reader(csvfile, delimiter=',')

您应该能够像这样访问20171205144050文件

myfiles['20171205144050']

Python csv文件名作为变量

2 个答案: