Added Folder Size Calculator script

Author: Soham-141

Python/Folder size calculator/README.md

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+A simple Python CLI tool that calculates the total size of a folder along with the size of the files and subfolders within it.
+
+Features:
+- Calculates total folder and subfolder sizes recursively.
+- Displays sizes of both subfolders and individual files.
+- Outputs total size of the entire directory.
+- Displays sizes in human-readable format (KB, MB, GB).
+
+Usage:
+'''bash
+python folder_size_calculator.py 
+
+Example usage:
+python folder_size_calculator.py "D:\Games"
+
+Output:
+
+Calculating folder sizes inside: D:\Games
+
+Game1/                                     = 2.34 GB
+Game2/                                     = 512.43 MB
+notes.txt                                  = 12.40 KB
+Total size of 'D:\Games': 2.85 GB

Python/Folder size calculator/folder_size_calculator.py

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+import os
+import sys
+
+def get_folder_size(path):
+    total_size = 0
+    # Walk through all directories and files inside the given path
+    for dirpath, dirnames, filenames in os.walk(path):
+        for f in filenames:
+            fp = os.path.join(dirpath, f)
+            # Check if file exists and is not a symbolic link
+            if not os.path.islink(fp) and os.path.exists(fp):
+                try:
+                    total_size += os.path.getsize(fp) # Add file size (in bytes)
+                except (PermissionError, FileNotFoundError):
+                    pass
+    return total_size
+
+
+def format_size(size_in_bytes):
+    for unit in ['B', 'KB', 'MB', 'GB', 'TB']:
+        if size_in_bytes < 1024:
+            # Return formatted size when it fits the current unit
+            return f"{size_in_bytes:.2f} {unit}"
+        size_in_bytes /= 1024
+    return f"{size_in_bytes:.2f} PB"
+
+
+def main():
+    # Ensure a folder path is provided as command-line argument
+    if len(sys.argv) < 2:
+        print("Usage: python folder_size_calculator.py <folder_path>")
+        sys.exit(1)
+
+    folder_path = sys.argv[1] # Read the folder path from arguments
+
+    if not os.path.exists(folder_path):
+        print(f"Error: The path '{folder_path}' does not exist.")
+        sys.exit(1)
+
+    print(f"\nCalculating folder sizes inside: {folder_path}\n")
+
+    total_size = 0 # Variable to store total folder size
+
+    # Loop through everything inside the given folder
+    for item in os.listdir(folder_path):
+        item_path = os.path.join(folder_path, item)
+        if os.path.isdir(item_path):
+            size = get_folder_size(item_path)
+            print(f"{item}/".ljust(45) + f"= {format_size(size)}")
+            total_size += size
+
+        # If the item is a file — get its direct size
+        elif os.path.isfile(item_path):
+            try:
+                size = os.path.getsize(item_path)
+                print(f"{item}".ljust(45) + f"= {format_size(size)}")
+                total_size += size
+            except (PermissionError, FileNotFoundError):
+                pass
+            
+    # Finally, print total folder size
+    print(f"Total size of '{folder_path}': {format_size(total_size)}")
+
+if __name__ == "__main__":
+    main()