Python pathlib module

Which of the following is NOT a correct way to create a Path object

• Path("my_file.txt")

• Path("dir\\file.txt")

• Path("dir2/hi.txt")

• None (they are all correct)

Answer explanation

Path() supports both / and \

Which of the following way is NOT a correct way to combine paths?

• Path("dir") / "subdir" / "hi.txt"

• Path("dir") / Path("hi.txt")

• Path("dir") / Path("C:/root.txt")

• "dir1" / "dir2" / Path("hi.txt")

• None (they are all correct)

Answer explanation

The operator / can combine a string or a Path (relative or absolute) to a given path.

Surprisingly, it also works with a string on the left "dir" / Path("...")

However, it does not work with two strings (i.e. "dir1" / "dir2" / Path("...")) because you cannot use / with two strings.

How to get the relative path from an absolute path abs_path, relative to curr_dir?

• abs_path.relative(curr_dir)

• curr_dir.relative(abs_path)

• abs_path.relative_to(curr_dir)

• curr_dir.relative_to(abs_path)

Which function could help you more easily get all PNG images in a directory image_dir but not in the subdirectories?

• image_dir.iter_dir()

• image_dir.glob()

• image_dir.rglob()

• image_dir.list_files()

Answer explanation

iter_dir: list all the files and directories but you cannot specify a pattern. You would have to filter by using `Path.suffix`

rglob: list with a pattern but recursively

glob: is the one you want

How to test if a file f is a Python file (based on the extension)?

• f.extension == "py"

• f.extension == ".py"

• f.suffix == ".py"

• f.suffix == "py"

Answer explanation

The extension is retrieved with .suffix and it contains the "." (so it should be compared to ".py")

How to get the path of a file that is in the same directory as a file f but with the name "hi.txt"?

• f.with_name("hi.txt")

• f.name("hi.txt")

• I don't know

  (Click me!🖱️)

How to create a directory d only if it does not exist, and with creation of parent directory if needed?

• d.mkdir()

• d.mkdir(exists=True, parents=True)

• d.mkdir(exist_ok=True, parents=True)

• mkdir(d, exist_ok=True, parent_ok=True)

How to delete a file to_delete?

• to_delete.delete()

• to_delete.unlink()

• to_delete.remove()

How to read the content of a Text file txt_file?

• txt_file.read()

• txt_file.read_text()

• txt_file.read_content()

How to read the content of a binary file bin (e.g. a picture)?

• bin.read()

• bin.read_bin()

• bin.read_bytes()

• bin.read(mode="b")