How to rename a file with Python?

Question

I am trying to change the name of file using Python but the name does not change.

The program has to take a photo, save it, copy it to a server, change the name of copied photo and change the name of original photo. So, first of all I define a variable which is going to be a exact date and time. After that, I take a photo and save it like imagen.jpg Following, I copy imagen.jpg to other path (server path), and try change its name to the variable which I defined before. But the name does not change and the file is removed.

After that I change the name of original photo with the same function and the name is changed....I don't know why the copied photo doesn't change its name.

Here's the code:

import shutil
import picamera
import os
fecha = time.strftime("%c")  # En esta variable se guarda la fecha actual y la hora para renombrar la foto guardada          
camera.capture('/home/pi/Desktop/RaspAlarm/imagen.jpg')
print("Capturando foto")
time.sleep(5)
print("Copiando foto al servidor")
shutil.copy("/home/pi/Desktop/RaspAlarm/imagen.jpg", "/var/www/html/RaspAlarm/Fotos")
time.sleep(1)
os.listdir("/var/www/html/RaspAlarm/Fotos")
os.rename ("/var/www/html/RaspAlarm/Fotos/imagen.jpg", fecha)
print("Cambiando nombre al archivo")
os.rename ("/home/pi/Desktop/RaspAlarm/imagen.jpg", fecha)
time.sleep(1)
print("Foto guardada")

Could you help me? Thank you

Teivaz · Accepted Answer · 2017-05-08 14:16:38Z

1

Your destination name is wrong. You are basically calling:

os.rename("/var/www/html/RaspAlarm/Fotos/imagen.jpg", "Mon May  8 16:15:07 2017")

while what you want looks more like

os.rename("/var/www/html/RaspAlarm/Fotos/imagen.jpg", "/var/www/html/RaspAlarm/Fotos/Mon May  8 16:15:07 2017.jpg")

Check the documentation for os.rename

answered May 8, 2017 at 14:16

Teivaz

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3 Comments

Sergio Muñoz Over a year ago

Yes I know. But when I try to hange the name of original photo the name is changed successfully using the same function. Why? Or, how can I add the .jpg extension like you said before?

Teivaz Over a year ago

@SergioMuñoz to add an extension you can use os.path.splitext or just path + fecha + '.jpg' if you're dealing with jpegs only. And yes, check out the os.path library.

Sergio Muñoz Over a year ago

Ok! I will try this. But is rare that in the original photo the name is changed well

Ch.Hedi · Accepted Answer · 2017-05-08 14:28:38Z

1

At first your destination is wrong! you should write all the path. Then you should remove spaces in fecha variable :

fecha = fecha.replace(' ', '')
os.rename("/var/www/html/RaspAlarm/Fotos/imagen.jpg", "/var/www/html/RaspAlarm/Fotos/{}.jpg".format(fecha))

answered May 8, 2017 at 14:28

Ch.Hedi

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2 Comments

Sergio Muñoz Over a year ago

Thank you for you answer. But Why the original photo changes his names well? If I am using the same function

Ch.Hedi Over a year ago

I dont think so, os.remove work exactly like mv command in Linux if you put destination as a word not as a path it will move the file to the function's directory. So I think maybe it works for you because the function is in the same directory as the original photo!

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