Hello lads!




I'm having some trouble with file management in Python and I'm hoping someone here can help me.




I'm working on a script that reads and writes data to a file. The problem is that when I try to write data to the file, it seems to overwrite the existing content instead of adding to it. Here's a simplified version of my code:

# Writing to a file
with open('data.txt', 'w') as file:
    file.write('New content')

I'm using "w" mode because I want to make sure the file is updated with the latest content. However, I expected it to overwrite the content, not add it. I thought "w" mode was supposed to handle this, but it looks like it might do the opposite.




I also check this: http://www.python.it/forum/thread/6940/lettura-di-un-file-csv-da-google-sheetsgenerativeai But I didn't find any solution. Could someone point me to the best solution for this? Can someone explain if this is the expected behavior or if I might be misunderstanding how the file modes work? Also, what would be the correct mode if I wanted to add content without overwriting existing data?




Thanks in advance for any help!

Puoi creare codici a barre con Python utilizzando librerie come python-barcode o qrcode e stamparli utilizzando una stampante termica collegata a un Raspberry Pi. Per la stampa, potresti voler utilizzare la libreria Escpos per stampanti termiche. Ci sono guide online per configurarlo con Raspberry Pi e stampanti termiche che dovrebbero aiutarti.