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Python/Directory-Tree-Generator/dstree/__init__.py

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+# __init__.py
+
+"""Top-level package for RP Tree."""
+
+__version__ = "0.1.0"

Python/Directory-Tree-Generator/dstree/cli.py

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+import pathlib
+import argparse
+import sys
+
+from . import __version__
+from .dstree import DirTree
+
+def main():
+    args = parse_args()
+    root_dir = pathlib.Path(args.root_dir)
+    if not root_dir.is_dir():
+        print("Entered directory is invalid!! ")
+        sys.exit()
+    tree = DirTree(root_dir)
+    tree.generate()
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(
+        prog = "tree",
+        description = "DS Tree, a directory tree generator.",
+        epilog = "Thank you for using dstree!!"
+    )
+
+    parser.version = f"ds tree v{__version__}"
+    parser.add_argument("-v","--version", action = "version")
+    parser.add_argument(
+        "root_dir",
+        metavar = "ROOT_DIR",
+        nargs = "?",
+        default = ".",
+        help = "Generate directory tree starting at ROOT_DIR"
+    )
+    return parser.parse_args()
+

Python/Directory-Tree-Generator/dstree/dstree.py

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+import os
+import pathlib
+
+PIPE = "|"
+ELBOW = "└──"
+TEE   = "├──"
+PIPE_PREFIX = "|   "
+SPACE_PREFIX = "    "
+
+class DirTree:
+    def __init__(self,root_dir):
+        self._generator = _TreeGenerator(root_dir) #Composition
+
+    def generate(self):
+        tree = self._generator.build_tree()
+        for item in tree:
+            print(item)
+
+
+class _TreeGenerator():
+    def __init__(self,root_dir):
+        self._tree = []
+        self._root_dir = pathlib.Path(root_dir)
+
+    def build_tree(self):
+        self._tree_head()
+        self._tree_body(self._root_dir)
+        return self._tree
+
+    def _tree_head(self):
+        self._tree.append(f"{self._root_dir}{os.sep}")
+        self._tree.append(PIPE)
+
+    def _tree_body(self,directory,prefix = ""):
+        entries = directory.iterdir()
+        entries = sorted(entries, key = lambda x : x.is_file())
+        entry_count = len(entries)
+        for index,entry in enumerate(entries):
+            connector = ELBOW if index == entry_count-1 else TEE
+            if entry.is_dir():
+                self._add_directory(entry,index,entry_count,prefix,connector)
+            else:
+                self._add_file(entry,prefix,connector)
+
+
+    def _add_directory(self,directory,index,entry_count,prefix,connector):
+        self._tree.append(f"{prefix}{connector}{directory.name}{os.sep}")
+        if entry_count != index - 1:
+            prefix += PIPE_PREFIX
+        else:
+            prefix += SPACE_PREFIX
+        self._tree_body(directory=directory , prefix=prefix)  #overwrite default prefix
+        self._tree.append(prefix.rstrip())
+
+    def _add_file(self,file,prefix,connector):
+        self._tree.append(f"{prefix}{connector}{file.name}")
+
+