ERROR trying to load Data to Google Collab from disk - google-colaboratory

Question

i am trying to open and load some data from disk in Google Collab but i get the following error message:
FileNotFoundError Traceback (most recent call last)
<ipython-input-38-cc9c795dc8d8> in <module>()
----> 1 test=open(r"C:\Users\Stefanos\Desktop\ΑΕΡΟΜΑΓΝΗΤΙΚΑ PUBLICATION\data\test.txt",mode="r")
FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\Stefanos\\Desktop\\ΑΕΡΟΜΑΓΝΗΤΙΚΑ PUBLICATION\\data\\test.txt'
the error occurs by this code:
test=open(r"C:\Users\Stefanos\Desktop\ΑΕΡΟΜΑΓΝΗΤΙΚΑ PUBLICATION\data\test.txt",mode="r")

Answer 1

Your problem is that you are trying to load from disk with path of your computer!
Collab gives you a completely different computer in the cloud to work with so it wont be able to open the files in your computer:
You have to upload files to collab:
Use this function to upload files. It will SAVE them as well.
def upload_files():
from google.colab import files
uploaded = files.upload()
for k, v in uploaded.items():
open(k, 'wb').write(v)
return list(uploaded.keys())