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Print name, path and type

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Python Practice › OS Module Programs › Program 35

Print name, path and type

EasyOS Module Programs · 35 of 49

Write a Python program to print the name, path and type (file or folder) of everything in a folder.

Output
Name : TestFolder
Path : target\TestFolder
Type : Folder
Name : testdata.txt
Path : target\testdata.txt
Type : File

Approach

  1. os.scandir entries know their name, path and type.

Solution

Python
import os os.makedirs("target/TestFolder", exist_ok=True)open("target/testdata.txt", "w").close()with os.scandir("target") as entries:    for e in sorted(entries, key=lambda e: e.name):        print("Name :", e.name)        print("Path :", e.path)        print("Type :", "Folder" if e.is_dir() else "File")
Output
Name : TestFolder
Path : target\TestFolder
Type : Folder
Name : testdata.txt
Path : target\testdata.txt
Type : File

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#36EasyPrint every nested file and folder#37EasyChange permissions with os.chmod()#38EasyChange ownership with os.chown()#39EasyRename a folder

← All 49 OS Module Programs

Print every nested file and folder

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Python Practice › OS Module Programs › Program 36

Print every nested file and folder

EasyOS Module Programs · 36 of 49

Write a Python program to print all nested files and folders with os.walk().

Output
proj/
  README.md
  src/
    main.py
    utils/
      helpers.py

Approach

  1. os.walk yields (folder, subfolders, files) for each folder.

Solution

Python
import os os.makedirs("proj/src/utils", exist_ok=True)for path in ["proj/README.md", "proj/src/main.py", "proj/src/utils/helpers.py"]:    open(path, "w").close()for folder, subfolders, files in os.walk("proj"):    depth = folder.count(os.sep)    print("  " * depth + os.path.basename(folder) + "/")    for name in sorted(files):        print("  " * (depth + 1) + name)
Output
proj/
  README.md
  src/
    main.py
    utils/
      helpers.py

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#37EasyChange permissions with os.chmod()#38EasyChange ownership with os.chown()#39EasyRename a folder#40EasyRename with os.renames()

← All 49 OS Module Programs

Run another Python script

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Python Practice › OS Module Programs › Program 33

Run another Python script

EasyOS Module Programs · 33 of 49

Write a Python program that runs another Python script.

Output
hello from the other script
os.system returned 0
captured: hello from the other script

Approach

  1. os.system returns the exit status; subprocess.run also captures output.

Solution

Python
import osimport subprocessimport sys with open("hello_script.py", "w") as f:    f.write("print('hello from the other script')\n") status = os.system(f'"{sys.executable}" hello_script.py')print("os.system returned", status)out = subprocess.run([sys.executable, "hello_script.py"], capture_output=True, text=True)print("captured:", out.stdout.strip())
Output
hello from the other script
os.system returned 0
captured: hello from the other script

Line by line

Line 8

os.system lets the child print directly and returns its exit status.

Line 10

subprocess.run is preferred because you can capture and check the output.

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#34EasyCreate files with 10 extensions#35EasyPrint name, path and type#36EasyPrint every nested file and folder#37EasyChange permissions with os.chmod()

← All 49 OS Module Programs

Create a full path with os.makedirs()

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Python Practice › OS Module Programs › Program 32

Create a full path with os.makedirs()

EasyOS Module Programs · 32 of 49

Write a Python program to create every folder of a path with os.makedirs().

Output
True

Approach

  1. exist_ok=True makes repeated runs safe.

Solution

Python
import os os.makedirs("a/b/c/d", exist_ok=True)os.makedirs("a/b/c/d", exist_ok=True)print(os.path.isdir("a/b/c/d"))
Output
True

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#33EasyRun another Python script#34EasyCreate files with 10 extensions#35EasyPrint name, path and type#36EasyPrint every nested file and folder

← All 49 OS Module Programs

Change the working directory

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Python Practice › OS Module Programs › Program 30

Change the working directory

EasyOS Module Programs · 30 of 49

Write a Python program to change the current working directory.

Output
workspace
True

Approach

  1. os.chdir(); remember the old folder to go back.

Solution

Python
import os start = os.getcwd()os.makedirs("workspace", exist_ok=True)os.chdir("workspace")print(os.path.basename(os.getcwd()))os.chdir(start)print(os.getcwd() == start)
Output
workspace
True

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#31EasyList files with os.scandir()#32EasyCreate a full path with os.makedirs()#33EasyRun another Python script#34EasyCreate files with 10 extensions

← All 49 OS Module Programs

List files with os.scandir()

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Python Practice › OS Module Programs › Program 31

List files with os.scandir()

EasyOS Module Programs · 31 of 49

Write a Python program to scan a folder and print all file names with os.scandir().

Output
['x.txt', 'y.py']

Approach

  1. scandir gives entries with name, is_file() and stat().

Solution

Python
import os os.makedirs("scan/sub", exist_ok=True)for name in ["x.txt", "y.py"]:    open(os.path.join("scan", name), "w").close()with os.scandir("scan") as entries:    print(sorted(e.name for e in entries if e.is_file()))
Output
['x.txt', 'y.py']

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#32EasyCreate a full path with os.makedirs()#33EasyRun another Python script#34EasyCreate files with 10 extensions#35EasyPrint name, path and type

← All 49 OS Module Programs

File size with os.path.getsize()

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Python Practice › OS Module Programs › Program 29

File size with os.path.getsize()

EasyOS Module Programs · 29 of 49

Write a Python program to get the size of a file in bytes.

Output
1000 bytes

Approach

  1. os.path.getsize().

Solution

Python
import os with open("size.bin", "wb") as f:    f.write(b"0123456789" * 100)print(os.path.getsize("size.bin"), "bytes")
Output
1000 bytes

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#30EasyChange the working directory#31EasyList files with os.scandir()#32EasyCreate a full path with os.makedirs()#33EasyRun another Python script

← All 49 OS Module Programs

Check read permission

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Python Practice › OS Module Programs › Program 28

Check read permission

EasyOS Module Programs · 28 of 49

Write a Python program to check read and write permission on a path with os.access().

Output
readable: True
writable: True
missing: False

Approach

  1. Pass os.R_OK / os.W_OK.

Solution

Python
import os open("perm.txt", "w").close()print("readable:", os.access("perm.txt", os.R_OK))print("writable:", os.access("perm.txt", os.W_OK))print("missing:", os.access("nope.txt", os.F_OK))
Output
readable: True
writable: True
missing: False

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#29EasyFile size with os.path.getsize()#30EasyChange the working directory#31EasyList files with os.scandir()#32EasyCreate a full path with os.makedirs()

← All 49 OS Module Programs

System and Python version

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Python Practice › OS Module Programs › Program 25

System and Python version

EasyOS Module Programs · 25 of 49

Write a Python program to get operating system and Python version information.

Output
Windows
3
True

Approach

  1. platform and sys modules.

Solution

Python
import platformimport sys print(platform.system())print(platform.python_version().split(".")[0])print(sys.version_info >= (3, 10))
Output
Windows
3
True

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#26EasyFolders searched for programs#27EasyRandom bytes with os.urandom()#28EasyCheck read permission#29EasyFile size with os.path.getsize()

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Folders searched for programs

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Python Practice › OS Module Programs › Program 26

Folders searched for programs

EasyOS Module Programs · 26 of 49

Write a Python program to list the folders searched for executables with os.get_exec_path().

Output
list True
True

Approach

  1. It returns the PATH folders as a list.

Solution

Python
import os paths = os.get_exec_path()print(type(paths).__name__, len(paths) > 0)print(any(os.path.isdir(p) for p in paths))
Output
list True
True
Note

The real list contains folders from your computer (often with your user name), so the example only checks its shape.

Learn the concept

New to this topic? Read the lesson, then come back.

More os module programs

#27EasyRandom bytes with os.urandom()#28EasyCheck read permission#29EasyFile size with os.path.getsize()#30EasyChange the working directory

← All 49 OS Module Programs