CODEWITHSUNDEEP
pythonpython-3.x
SkyeBoniwell
SkyeBoniwell

Reputation: 7092

Python says it can't find the file I am trying to rename even though it can read the file name

Im tryin to append a short string to every '.png' file. But when I run it, it says cannot find the file. But I know it's there and I can see it in the folder.

Is there anything I need to do?

Here is my script:

import os

for file in os.listdir("./pics"):
    if file.endswith(".png"):
        newFileName = "{0}_{2}{1}".format(*os.path.splitext(file) + ("z4",))
        os.rename(file, newFileName)

Here is the error message I get...02.png is the first file in the folder:

fileNotFoundError: [WinError 2] The system cannot find the file specified: '02.png' -> '02_z4.png'

It's odd though because it gets the filename, in this case, 02.png. So if it can read the file name, why can't it find it?

Thanks!

Upvotes: 1

Views: 881

Answers (2)

OneLiner
OneLiner

Reputation: 611

The name returned from os.listdir() gives the filename, not the full path. So you need to rename pics/02.png to pics/02_zf.png. Right now you don't include the directory name.

Upvotes: 1

That1Guy
That1Guy

Reputation: 7233

I thought my comment might be enough, but for clarity I'll provide a short answer.

02.png doesn't exist relative to your working directory. You need to specify the path to the file for os.rename so you need to include the directory.

import os

for file in os.listdir("./pics"):
    if file.endswith(".png"):
        newFileName = "/pics/{0}_{2}{1}".format(*os.path.splitext(file) + ("z4",)) # Notice the ./pics
        os.rename(os.path.join('pics', file), newFileName)

Upvotes: 1

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