PermissionError when trying to rename a file on OneDrive

Question

When I run my code that encrypts a file, I get the following error:

<_io.TextIOWrapper name='C:/Users/depen/OneDrive/Documents/PNG_transparency_demonstration_1 >(2).png' mode='r' encoding='cp1252'>
read
encrypting
encrypted
encrypted file saved
Traceback (most recent call last):
  File "c:\Users\depen\OneDrive\Documents\python\timer\encrypt.py", line 93, in <module>
    encrypt(fpath)
  File "c:\Users\depen\OneDrive\Documents\python\timer\encrypt.py", line 67, in encrypt
    os.rename(file_fpath, file_fpath + ".encrypted")
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:/Users/depen/OneDrive/Documents/PNG_transparency_demonstration_1 (2).png' -> 'C:/Users/depen/OneDrive/Documents/PNG_transparency_demonstration_1 (2).png.encrypted'

Here is my code:

fernet = AES(key)

def encrypt(file_path):
    #start a timer
    start = time.time()

    def read_in_chunks(file_object, chunk_size= 52428800):
        while True:
            data = file_object.read(chunk_size)
            if not data:
                break
            yield data


    with open(file_path, "rb") as f:
        for piece in read_in_chunks(f):
            data = fernet.encrypt(randbytes(16), piece, randbytes(16))
            currenttime = time.time()
            print(currenttime - start)
            with open (file_path + ".enc", "ab") as f:
                f.write(data)
                f.close()
    
    with open("filenames.txt", "a") as file:
        file.write(file_path + "\n")
        file.close()
    #end the timer
    end = time.time()
    print ("Time taken to encrypt   `: " + str(end - start))
    os.remove(file_path)

The code does encrypt the file but dose not add a .encrypted to the end of the filename.

Answer 1

You got this error because you are working on onedrive directory . Onedrive is trying to sync the file so once you create the file , he's trying to upload the file.

Try to execute your code from another directory that onedrive is not using

The process cannot access the file because it is being used by another process: 'C:/Users/depen/OneDrive/Documents/PNG_transparency_demonstration_1 (2).png' -> 'C:/Users/depen/OneDrive/Documents/PNG_transparency_demonstration_1 (2).png.encrypted'