How to check if a file is exist in data folder by code?

Processing.py
1

I have to check if a file is exist in data folder while the code is running. How to achieve that function?

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File f = dataFile("DoIExist.txt");
String filePath = f.getPath();
boolean exist = f.isFile();
println(filePath, exist);
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3

It works in java mode. Thanks!! By the way, could you please tell me how to achieve that in python mode if possible?

4

Or is there any function to get current processing data folder’s path?

5

You can do that in python like this:

import os

def setup():
    size(400,400)
    print(os.listdir('.'))
    print('someFile.txt' in os.listdir('.'))

‘.’ indicates your current path, and ‘..’ goes back one folder up. If you’re storing files in data folder, then you need to check inside 'data/' instead of ‘.’

Oh and make sure you post your processing.py questions in the appropriate forum.

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f = this.dataFile('DoIExist.txt')
filePath, exist = f.path, f.isFile()
print filePath, exist
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7

Yes! Just pass an empty string "" to dataPath():

dataFolderPath = this.dataPath('') + '/'
print dataFolderPath

… or to dataFile():

dir = this.dataFile('')
dataFolderPath = dir.path + '/'
print dataFolderPath

However, if you need all files within the sketch’s “data/” folder, like all images for example, you can use listPaths(), passing the “data/” folder path + a string w/ all desired “extensions=,”: :sunglasses:

PICS_EXTS = 'extensions=,png,jpg,jpeg,gif,tif,tiff,tga,bmp,wbmp'

dir = this.dataFile('')
imagePaths, imagesFound = (), 0

if dir.isDirectory():
    imagePaths = this.listPaths(dir.path, PICS_EXTS)
    imagesFound = len(imagePaths)

printArray(imagePaths)
print 'Found %d image(s)' % imagesFound
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