Can't open a .txt file - python

So I was trying to learn the function open which is apparently easy to use. I copied a really simple code from a website to just open and read a file called "test.txt" with some text on it. I tried it both ways, not specifying the path (since it's in the same folder) and calling the whole path. None worked (FileNotFoundError). It's all in a server so that might be the problem but I'd still like a short explanation if that is the problem.
Go easy on the vocabulary please, I'm just taking the first steps.
On the image I tried to stack as much info as posible: link.
handle = open("test.txt")
data = handle.read()
print(data)
handle.close()
SOLUTION: I actually just removed the .txt from the text file. Now it's name is test and it is a text file and the code works. I previously moved the python file and text file from the server to the computer since a comment said it could be the problem, but after finding my solution i put it all back in the server and the program runs as well.

You are trying to open a file that is located on a network share (\\Servidor\profiles$\...) and you are accessing it by using the \\<server>\<sharename> syntax and not mounted as a Windows drive letter.
Some things you could try:
Copy the data from the network share to some local directory on your machine and run your script again.
Try mounting the network share under a "drive letter" and run again using this drive letter.
Try this answer: https://stackoverflow.com/a/7170008/8745384 if you really need to access it on the network share.

Related

filenotfounderror: [errno 2] no such file or directory: .txt file

I am currently learning python and my instructor is telling me to open a text file using the open() meathod. I get the following error each time:
FileNotFoundError: [Errno 2] No such file or directory: 'movies.txt'
I have tried using online guides but all I could find was for .csv files, whereas I'm trying to open a text file. My complete code is as follows:
with open('movies.txt') as file_object:
contents = file_object.read()
print(contents.strip())
I've tried writing the file 'movies.txt' in VS code, and in my notepad, and then saving it to the same directory as the code but no use. I have also attempted to use a more exact file source, but still the same error. Sadly, google didn't have too much information for text files so I have to come here. Is there something I have to change in VS settings? I also tried my code in IDLE but not response either.
Thanks,
Stan
First of all you have to make sure that the file you are looking is in the same folder as your script as you are giving just the name and not the path.
Then the code to read a file misses a parameter:
with open('movies.txt', 'r') as file_object:
contents = file_object.read()
print(contents.strip())
r: read
w: write
a: append
The code is ok, the problem is finding the object as the error states. As you write it, it looks like "movies.txt" is in the same directory as the script. Are you sure they are in the same directory? Otherwise you will have to set the whole route
This is not about the directory your code is in. This is about the current working directory. These two directories may or may not be the same in some specific circumstance, but treating them as the same thing will lead to confusion in the future.
I don't know about VS Code (haven't worked with it), but all IDEs I've worked with have an option to set the current working for code you're running from the IDE.
I ended up using the run & debug function in VS, and it works. I dont understand what it debugged. All the information it gave me was my .vscode files? I guess its fine for now? Is it possible that the issue was caused by something else I have downloaded on my laptop?
Thanks,
Stan

Export a geoTIFF file from jupyter notebook to google drive but nothing appears in my google drive

After having searched for a long time for a solution to my problem without succeeding, I'd like to ask you my question here.
I have a python code that creates a geoTIFF file from google earth engine data. I'm running it on jupyter notebook and I want to export the geoTIFF to my google drive.
The code works without error and a shapefile (shp) is embedded as input.
The problem is that nothing appears on my drive, the folder "GEE" that it creates is well created, but it is empty.
Here is the export part of the code:
task = ee.batch.Export.image.toDrive(image=bare1.clip(aoi),
scale=10,
region=aoi.getInfo()['coordinates'],
fileFormat='GeoTIFF',
description='Active',
folder='GEE',
maxPixels=1e9)
task.start()
You should also know that I am a beginner in python :)
Do you have an idea for a solution? Do not hesitate to ask me for more details.
Thanks :)
First: Have you checked the code editor (https://code.earthengine.google.com/) to see if there has been an error message that accounts for the lack of export, or if the file is actually being deposited in a different place? One note about the 'folder' parameter, is that (in my understanding) it doesn't create a folder necessily, but instead is just telling GEE to deposit your image in the most recently created folder of the same name, which could be anywhere in your Drive.
Next, have you definitely mounted your Google Drive? I assume so, if the GEE folder is working, but just to be sure you can always run:
from google.colab import drive
drive.mount('/content/drive')
Next, I have found that when I am exporting an image, I need to convert it to double for correct export. So in your case, this would be changing the first line to (adding the .toDouble())
task = ee.batch.Export.image.toDrive(image=bare1.clip(aoi).toDouble())
If that doesn't work: Have you tried exporting other images with this same code? (Ie replacing bare1 with another image that you know works, like ee.Image(1) which makes a blank image where every pixel is the value 1?
Happy to take another look if none of this helps!
The task console in the GEE code editor should give a description of the export error. Exports are finicky with a number of causes for error. A good first place to check is that you didn't exceed the maximum pixels. You can deal with max pixel errors by reducing the number of bands in your image to only include those that you need, or increasing the maxpixel parameter in your export task. Sometimes the following dictionary style formatting works for me although it's not clear why:
task = ee.batch.Export.image.toDrive(**{
'image':bare1.clip(aoi),
'scale':10,
'region': aoi.getInfo()['coordinates'],
'fileFormat':'GeoTIFF',
'description':'Active',
'folder':'GEE',
'maxPixels':1e9
})
task.start()

How can I prevent the filename from changing (rename) using python?

I have a project in mind, but there is a section that I don't know how to do. I'm using Python version 3.6 and windows 10. For example we have a file name of "example.txt" I want to prevent the name and its content of this file from being changed.
I did research on this topic, but I could not reach any research. Can we prevent the file's name (including its extension) from changing or its contents?To realize this, I think it is necessary to start as an administrator.
Thanks.
It is possible to stop another program from editing a file by locking it in python.
There is a module that does this called filelock. Take a look at the source code to see how it is done.
It is also worth noting that more advanced ransomware will try to stop processes so they can encrypt files, so this might not work in all cases.

linux server hosting .py files that are reading .txt files but cant store in variable

I have a linux server.
It is reading files in a directory and doing things with the full text of the file.
I've got some code. it retrieves the file path.
And then I'm doing this:
for file in files:
with open(file,'r') as f:
raw_data = f.read()
Its reading the file just fine. And Ive used this exact code outside of the server and it worked as expected.
In this case, when run on the server, the above code is spitting out all the text to the terminal. But then raw_data == None.
Not the behavior I'm used to. I imagine its something very simple as I am new to linux in general.
But I'm wanting the text in the file to be stored in the 'raw_data' variable as a string.
is there a special way I am to do this on linux? Googling so far as not helped much and I feel this is likely a VERY simple problem.
User error.
I thought, due to my noob status in linux, that perhaps the enviroment was causing weird behavior. But buried deep in the functions that use the data from the files was a print statement i had used a while back for testing. That was causing the output to screen.
As for the None type being returned. It was being returned by another subfunction that had a try/except block in it and was failing. The variable being referenced had the same name (raw_data). So i thought it came from the file read. But it was actually from elsewhere.
thanks all who stopped by. User error for this one.

Geany and other IDE not writing to file

I'm using Geany as my editor and when I first started using it, writing to files worked fine but somehow it randomly stopped working. The code executes without any errors but the file isn't created / is empty if already created and I've no idea why.
Simple code as below doesn't work:
filename = 'dogs'
with open(filename, 'w') as f:
f.write('tester')
with open(filename, 'r') as f:
contents = f.read()
print(contents)
The output I get from the 'read' method looks correct on the console output (it just prints 'tester'), but no file is created / edited in my directory.
Geany also has a weirdly complex debugger (if anyone has any helpful guides on how to use it please let me know) so I can't debug properly. I've tried all that I know including using an absolute file path, running in admin mode. The issue is also present when I try to use Pygal to render_to_file(), which is the project I'm working on so right now I can't go any further because anything that requires writing doesn't work. FYI it reads fine.... It's like Geany doesn't have admin rights or something?
EDIT: I've run this code on a python shell (without a .py file) and it worked fine, creating the file as desired. I then ran it using CMD with the .py file and it didn't work. Also ran using Pycharm, it doesn't work when I run it normal but it works when I run it in debug mode? It doesn't seem to be a Geany specific issue, but I am so confused!
Because the code works in the shell I strongly suspect the file is being created somewhere but you are looking in the wrong place.
I know you mentioned absolute paths but I just want to reiterate that you are not currently using an absolute path. An absolute path must start with a '/' (linux/mac) or something like: 'C:/' (windows).
Here are 2 things to try:
1)
Change the name 'dogs' to something really obscure and then do a global search on your whole hard disk for that name. You'll probably find it.
2) Get python to tell you where the file is like this:
import os
filename = 'dogs'
with open(filename, 'w') as f:
f.write('tester')
print(os.path.realpath(f.name))
Got the solution - the files were being created the whole time every time I ran my code, however my antivirus software Comodo contained them within a hidden folder in my drive which couldn't be found by a normal search.
I'm not sure if this a common problem with AV software or just Comodo, can't find anything on the net about it but there you go. I removed these files and the programs from its radar and it now works perfectly.
Although one mystery is how the python shell bypassed that problem. That threw me off thinking it was AV.

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