Add Pathlib

Author: areed1192

python/python-core/pathlib.py

@@ -0,0 +1,97 @@
+import pathlib
+
+# Let's create a basic path to this file.
+print(pathlib.Path(__file__))
+
+"""
+    Path classes are divided between pure paths,
+    which provide purely computational operations
+    without I/O, and concrete paths, which inherit
+    from pure paths but also provide I/O operations.
+"""
+
+# Let's take at a Windows Path and a Pure Windows Path.
+windows_path = pathlib.WindowsPath(__file__)
+windows_path_pure = pathlib.PureWindowsPath(__file__)
+print("PurePath: " + str(windows_path_pure))
+print("Path: " + str(windows_path))
+
+"""
+    Here's a case where this might be useful. You 
+    are on Linux but youneed to manipulate a windows
+    path.
+
+    Let's explore the operations we can do with a path.
+"""
+
+# We can grab the parts.
+print(windows_path.parts)
+
+# There is also a property called `parent`. This will allow
+# us to get the directory above.
+print(windows_path.parent)
+
+# and you can attach one call on top of the other.
+print(windows_path.parent.parent)
+
+# But when you're doing that you really should use `parents`.
+# This way you can just select how you want to go up. For
+# example, if you want to recreate the code up above just
+# do this:
+print(windows_path.parents[1])
+
+# I want to create a folder in this director, so let's define the path.
+data_folder = pathlib.Path(__file__).parents[0].joinpath('data')
+
+# Let's check to see if it already exists first, by using the `exists()`
+# method.
+if not data_folder.exists():
+    data_folder.mkdir()
+
+# Let's also add a file inside of it, but this time I want to raise
+# an error if it already exists. We don't to overwrite the file!
+data_folder.joinpath('my_file.txt').touch(exist_ok=True)
+
+# Lets add some more objects
+data_folder.joinpath('my_file.csv').touch(exist_ok=True)
+data_folder.joinpath('my_file.json').touch(exist_ok=True)
+data_folder.joinpath('my_folder').mkdir(exist_ok=True)
+
+# From here lets iterate through the folder.
+for file_obj in data_folder.iterdir():
+
+    # Let's ask some questions about each object.
+    print("+"*80)
+    print(file_obj)
+    print("Are you a directory? " + str(file_obj.is_dir()))
+    print("Are you a file? " + str(file_obj.is_file()))
+    print("Are you a symbolic link? " + str(file_obj.is_symlink()))
+    print("Are you a relative of the `Data` Folder? " + str(file_obj.is_relative_to(data_folder)))
+    print("File Drive is: " + str(file_obj.drive))
+    print("File Stem is: " + str(file_obj.stem))
+    print("File Anchor is: " + str(file_obj.anchor))
+    print("File Name is: " + str(file_obj.name))
+    print("File Suffix is: " + str(file_obj.suffix))
+
+# Here are some useful methods.
+
+# Grab the Current Working Directory.
+print("Current Working Directory: " + str(pathlib.Path.cwd()))
+
+# Grab the File Path of THIS script.
+print("Full File Path of the current Script: " + str(pathlib.Path(__file__)))
+
+# Grab the System home path.
+print("Home Path is: " + str(pathlib.Path.home()))
+
+# `absolute` takes a partial path and makes it a full path.
+print("My Partial Path looks like this before `absolute`: " + str(pathlib.Path("data")))
+print("My Partial Path looks like this after `absolute`: " + str(pathlib.Path("data").absolute()))
+
+# `resolve` will do things like remove `..` or change windows path to unix paths and vice versa.
+print(pathlib.Path('docs/../setup.py').resolve())
+print(pathlib.Path("C:/Users/Alex/OneDrive/Growth - Tutorial Videos/Lessons - Python/Lessons - Pathlib/using_pathlib.py").resolve())
+
+# Final thing is `stat()` which can be used to get certain statistics about the file.
+print(pathlib.Path(__file__).stat().st_size)
+print(pathlib.Path(__file__).stat().st_mtime)