Develop Reference

For loop with files with Python

I have this code:
import os
directory = "JeuDeDonnees"
for filename in os.listdir(directory):
print("File is: "+filename)
This code run and prints files name in a VSCode/Python environment.
However, when I run it in Sikuli-IDE I got this error:
[error] SyntaxError ( "no viable alternative at input 'for'", )
How can I make this for loop run or is there an alternative that can work?

Answer found ;
Basically, in my Sikuli-IDE environnement, there's layers of Python, Java, Jython... interlocking each other so the Path finding was tedious.
src_file_path = inspect.getfile(lambda: None) #The files we're in
folder = os.path.dirname(src_file_path) # The folder we're in
directory = folder + "\JeuDeDonnees" # Where we wanna go
for filename in os.listdir(directory) # Get the files
print(filename)
We're telling the Path where we are with the current file, get the folder we're in, then moving to "\JeuDeDonnees" and the files.

Python os.chdir() not working with path with spaces and special characters

I'm trying to run some files sequentially (scrape.py, tag.py, save.py and select.py) that are located in a folder named 'cargen'. However, when I try to make os.chdir(path) to access this 'cargen' folder, I'm getting an Exception message because in the path to 'cargen' folder there's a directory with spaces and special characters on it.
The code to run the files sequentially looks like the following:
import os
path = "C:/Users/Desktop/repl/Special Cháracters/cargen/"
os.chdir(path)
directory = 'C:/Users/Desktop/scrap/'
files = ['scrape', 'tag', 'save', 'select']
if __name__ == '__main__':
if not os.path.isdir(directory):
os.mkdir(directory)
[os.system('python ' + path + f'{file}.py ' + directory) for file in files]
The message that I'm getting looks like this:
python: can't open file 'C:/Users/Desktop/repl/\Special': [Errno 2] No such file or directory
I've tried to move to files to a path where there aren't any special characters or spaces in the path and the code works perfectly. Could anybody please help me with this? How should I define the path to 'cargen' to be able to access these files?
NOTE: I'm using Windows 10 with Anaconda

When windows reads comands it uses spaces as separators. e.g.:
my folder -> command1: my, command2: folder
But you can join them adding quotation marks you can join the separated commands in one.
"my folder" -> command1: my folder
I think something similiar is appening to you, try to declare your path like that:
'"your path"'

Finally, the problem wasn't the os.chdir(). The problem was related to os.system() function as #user2357112 mentioned.
The os.system() command was giving me problems due to the spaces in the path. Thus, as the files are all located in the same folder, I have just eliminated that reference to path, resulting in something like:
import os
path = os.getcwd()
os.chdir(path)
directory = 'C:/Users/Desktop/scrap/'
files = ['scrape', 'tag', 'save', 'select']
if __name__ == '__main__':
if not os.path.isdir(directory):
os.mkdir(directory)
[os.system('python ' + f'{file}.py ' + directory) for file in files]

Python Directory Path

I am trying to write a python script to use the linux command wc to input the amount of lines in a file. I am iterating through a directory inputted by the user. However, whenever I get the absolute path of a file in the directory, it skips the directory it is in. So, the path isn't right and when I call wc on it, it doesn't work because it is trying to find the file in the directory above. I have 2 test text files in a directory called "testdirectory" which is located directly under "projectdirectory".
Script file:
import subprocess
import os
directory = raw_input("Enter directory name: ")
for root,dirs,files in os.walk(os.path.abspath(directory)):
for file in files:
file = os.path.abspath(file)
print(path) #Checking to see the path
subprocess.call(['wc','l',file])
This is what I get when running the program:
joe#joe-VirtualBox:~/Documents/projectdirectory$ python project.py
Enter directory name: testdirectory
/home/joe/Documents/projectdirectory/file2
wc: /home/joe/Documents/projectdirectory/file2: No such file or directory
/home/joe/Documents/projectdirectory/file1
wc: /home/joe/Documents/projectdirectory/file1: No such file or directory
I don't know why the path isn't /home/joe/Documents/projectdirectory/testdirectory/file2 since that is where the file is located.

You're using the output of os.walk wrong.
abspath is related to your program's current working directory, whereas your files are in the directory as specified by root. So you want to use
file = os.path.join(root, file)

Your issue is in the use of os.path.abspath(). All that this function does is appends the current working directory onto whatever the argument to the function is. You also need to have a - before the l option for wc. I think this fix might help you:
import os
directory = input("Enter directory name: ")
full_dir_path = os.path.abspath(directory)
for root,dirs,files in os.walk(full_dir_path):
for file in files:
full_file_path = os.path.join(root, file)
print(full_file_path) #Checking to see the path
subprocess.call(['wc','-l',full_file_path])

Python, Windows. Addressing folder in parent directory

I have a "main" folder with two folders inside: "Data" and "Code". "Data" folder contains "limited_scope" folder with .txt files. From "Code" folder I run my_code.py file with lines:
import os
directory_path = '..\\Data\\limited_scope\\'
directorie = sorted(os.listdir(directory_path))
And get the error:
FileNotFoundError: [WinError 3] The system cannot find the path specified: '..\\Data\\limited_scope\\'
When I change to:
directory_path = 'C:\\Users\\myname\\Documents\\main\\Data\\limited_scope\\'
the error disappears.
Can anyone tell the reason of this error?

Your current working directpry while executing the my_code.py should be the Code directory, then this will work.
Otherwise you can try below code which will use my_code.py's folder and use it:
import os
current_dir = os.path.dirname(__file__)
directory_path = os.path.join(current_dir,'..\\Data\\limited_scope\\')
directorie = sorted(os.listdir(directory_path))

Unable to loop through images in SimpleITK

I want to read through images in different folders. I wrote the following code
for Case_id in range(1,6):
path ='/Users/XXXXXX/Desktop/pyradiomics/Converted/Case{}/'.format(Case_id)
print(path)
for files in os.listdir(path):
if files.endswith("Image.nii"):
print(files)
image=sitk.ReadImage (files)
if files.endswith("label.nii"):
print(files)
mask=sitk.ReadImage (files)
When I run this I get an error message:
RuntimeError: Exception thrown in SimpleITK ReadImage:
/scratch/dashboard/SimpleITK-OSX10.6-x86_64-pkg/SimpleITK/Code/IO/src/sitkImageReaderBase.cxx:89:
sitk::ERROR: The file "xxxx_image.nii" does not exist.
If I just run the print command I can see all the files along with path in the specified folder. Would appreciate the help.

#dave-chen is correct. You need to join the path to get the full path.
Try:
for Case_id in range(1,6):
path ='/Users/XXXXXX/Desktop/pyradiomics/Converted/Case{}/'.format(Case_id)
print(path)
for files in os.listdir(path):
if files.endswith("Image.nii"):
print(files)
image=sitk.ReadImage(os.path.join(path, files))
if files.endswith("label.nii"):
print(files)
mask=sitk.ReadImage(os.path.join(path, files))

I'm guessing you need to pass the full path name to ReadImage. 'files' is only the name of the file. If you're not running the script in that 'path' directory, ReadImage won't fine the files, so it's going to look in the current working directory.