CODEWITHSUNDEEP
pythonjupyter-notebook
yellowjacket05
yellowjacket05

Reputation: 168

How can I open files in directories below the working directory in Jupyter with Python on Linux?

I am an intermediate Python and Jupyter developer, but I am having an issue with what should seem a simple problem.

Problem

When I open a notebook and call the rsf package command to input a file, I cannot read rsf files in a given directory below the working directory. All files are not empty.

with rsf.input(fname) as sf:

The error is: FileNotFoundError returned by the following line:

with(open(filename, 'r') as fh:

Attempted Solutions

1) I have used sys.path.append('/ <path from Jupyter working directory to file directory> /), but still cannot read the files in that directory.

2) I have deleted the above sys.path.append(...) command and called sys.path.pop() to remove the file directory, and still have the same error.

3) I printed the sys.path to confirm and see that only python36 related directories are on the path, no custom directories I have added. I checked this after step 2.

4) I listed all files in the directory I specified, and I can see all expected files:

from os import listdir
from os.path import isfile, join
mypath = <path from Jupyter working directory to file directory>
onlyfiles = [f for f in listdir(mypath) if isfile(join(mypath, f))]
print(onlyfiles)

Is there another working directory path that I need to load?

Upvotes: 0

Views: 506

Answers (2)

yellowjacket05
yellowjacket05

Reputation: 168

Adding some more context here for sys.path vs os.path.

sys.path is used to change the path that Python searches to import packages: https://leemendelowitz.github.io/blog/how-does-python-find-packages.html

os.path is used to change the current working directory: https://www.geeksforgeeks.org/python-os-chdir-method/

Upvotes: 0

jnnnnn
jnnnnn

Reputation: 4428

Try using os.listdir to see what files are visible to Python.

Also be aware that open doesn't use sys.path:

file is a path-like object giving the pathname (absolute or relative to the current working directory)

You can change the 'current working directory' using os.chdir.

You can see the current directory using os.path.abspath('.').

Upvotes: 2

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