diff --git a/bank_account.py b/bank_account.py
new file mode 100644
index 0000000..f02514c
--- /dev/null
+++ b/bank_account.py
@@ -0,0 +1,32 @@
+class BankAccount:
+    """A simple BankAccount class."""
+
+    def __init__(self, account_holder: str, initial_balance: float = 0.0):
+        """Initialize the account with the account holder's name and initial balance."""
+        self.account_holder = account_holder
+        self.balance = initial_balance
+
+    def deposit(self, amount: float):
+        """Deposit an amount into the account."""
+        if amount <= 0:
+            raise ValueError("Deposit amount must be positive.")
+        self.balance += amount
+        return self.balance
+
+    def withdraw(self, amount: float):
+        """Withdraw an amount from the account."""
+        if amount <= 0:
+            raise ValueError("Withdrawal amount must be positive.")
+        if amount > self.balance:
+            raise ValueError("Insufficient balance.")
+        self.balance -= amount
+        return self.balance
+
+    def get_balance(self):
+        """Return the current balance of the account."""
+        return self.balance
+
+    def __str__(self):
+        """Return a string representation of the account."""
+        return f"BankAccount({self.account_holder}, Balance: {self.balance})"
+
diff --git a/checking_account.py b/checking_account.py
new file mode 100644
index 0000000..0548cfa
--- /dev/null
+++ b/checking_account.py
@@ -0,0 +1,30 @@
+from bank_account import BankAccount
+
+class CheckingAccount(BankAccount):
+    """A CheckingAccount class that extends BankAccount with overdraft protection."""
+
+    def __init__(self, account_holder: str, initial_balance: float = 0.0, overdraft_limit: float = 500.0):
+        """
+        Initialize the checking account with an overdraft limit.
+        :param overdraft_limit: Maximum overdraft amount allowed (default is $500.0).
+        """
+        super().__init__(account_holder, initial_balance)
+        self.overdraft_limit = overdraft_limit
+
+    def withdraw(self, amount: float):
+        """
+        Withdraw an amount from the account, considering overdraft protection.
+        :param amount: The amount to withdraw.
+        :raises ValueError: If withdrawal exceeds overdraft limit.
+        """
+        if amount <= 0:
+            raise ValueError("Withdrawal amount must be positive.")
+        if amount > self.balance + self.overdraft_limit:
+            raise ValueError("Withdrawal exceeds overdraft limit.")
+        self.balance -= amount
+        return self.balance
+
+    def __str__(self):
+        """Return a string representation of the checking account."""
+        return f"CheckingAccount({self.account_holder}, Balance: {self.balance}, Overdraft Limit: {self.overdraft_limit})"
+
diff --git a/generated_test_cases.py b/generated_test_cases.py
new file mode 100644
index 0000000..23bdfbe
--- /dev/null
+++ b/generated_test_cases.py
@@ -0,0 +1,18 @@
+import pytest
+from combined_test_cases import *
+
+# Initialize instances
+Person_1 = Person('woARN', -85)
+Company_1 = Company('dDveR')
+
+# Test cases
+def test_Company_add_employee_0():
+    instance = Company_1
+    result = instance.add_employee(Person())
+    assert isinstance(result, NoneType)
+
+def test_Company_add_employee_1():
+    instance = Company_1
+    result = instance.add_employee(Person())
+    assert isinstance(result, NoneType)
+
diff --git a/randoop_cli/cli.py b/randoop_cli/cli.py
index cdd3424..f410d1d 100644
--- a/randoop_cli/cli.py
+++ b/randoop_cli/cli.py
@@ -1,11 +1,17 @@
 import click
 from pathlib import Path
+import requests
+import zipfile
+import os
+import shutil
+from io import BytesIO
 from .module_loader import load_module
 from .class_inspection import get_classes
 from .test_generator import randoop_test_generator, write_regression_tests
 import time
 from rich.console import Console
 from rich.progress import Progress
+import time
 
 console = Console()
 
@@ -17,6 +23,92 @@ def simulate_loading(task_name, steps=5, delay=0.5):
             time.sleep(delay)  # Simulating a delay
             progress.update(task, advance=1)
 
+def download_and_extract_repo(repo_url, temp_dir):
+    """
+    Downloads a GitHub repository as a zip file and extracts it to a temporary directory.
+    """
+    if not repo_url.endswith(".git"):
+        repo_url = repo_url.rstrip("/") + ".git"
+    
+    zip_url = repo_url.replace(".git", "/archive/refs/heads/master.zip")
+    console.print(f"Downloading repository from: {zip_url}")
+    
+    response = requests.get(zip_url, stream=True)
+    if response.status_code == 200:
+        with zipfile.ZipFile(BytesIO(response.content)) as zf:
+            zf.extractall(temp_dir)
+    else:
+        console.print(f"[bold red]Failed to download the repository: {response.status_code}[/bold red]")
+        exit(1)
+
+def identify_source_files(repo_path):
+    """
+    Identifies source code files in the repository by excluding non-code files like docs, tests, and examples.
+    """
+    source_files = []
+    for root, dirs, files in os.walk(repo_path):
+        # Ignore non-source directories
+        ignored_dirs = {"docs", "examples", "tests", ".github", "__pycache__"}
+        dirs[:] = [d for d in dirs if d not in ignored_dirs]
+
+        for file in files:
+            if file.endswith(".py") and not file.startswith("__init__"):
+                source_files.append(Path(root) / file)
+    
+    return source_files
+
+import re
+from collections import defaultdict, deque
+
+def parse_imports(file_path):
+    """
+    Parse a Python file to extract imported modules or files.
+    """
+    imports = []
+    with open(file_path, "r", encoding="utf-8") as f:
+        for line in f:
+            match = re.match(r"^\s*(?:from|import) (\S+)", line)
+            if match:
+                imports.append(match.group(1).split('.')[0])  # Extract the module name
+    return imports
+
+def resolve_dependencies(source_files):
+    """
+    Resolve file loading order based on import dependencies using topological sorting.
+    """
+    dependency_graph = defaultdict(set)
+    file_map = {file.stem: file for file in source_files}
+
+    # Build the dependency graph
+    for file in source_files:
+        imports = parse_imports(file)
+        for module in imports:
+            if module in file_map:  # Only consider local modules
+                dependency_graph[file.stem].add(module)
+
+    # Perform topological sorting
+    visited = set()
+    resolved = []
+    temp_stack = set()
+
+    def visit(node):
+        if node in temp_stack:
+            raise ValueError(f"Circular dependency detected: {node}")
+        if node not in visited:
+            temp_stack.add(node)
+            for dep in dependency_graph[node]:
+                visit(dep)
+            temp_stack.remove(node)
+            visited.add(node)
+            resolved.append(node)
+
+    for file in source_files:
+        if file.stem not in visited:
+            visit(file.stem)
+
+    # Return files in the resolved order
+    return [file_map[stem] for stem in resolved]
+
 @click.command()
 @click.option(
     "-k",
@@ -26,43 +118,103 @@ def simulate_loading(task_name, steps=5, delay=0.5):
     help="Number of times to extend the sequence (default: 2)",
     show_default=True,
 )
+@click.option(
+    "--repo-url",
+    type=str,
+    default=None,
+    help="GitHub repository URL to process.",
+)
 @click.option(
     "-f",
-    "--file-path",
+    "--file",
+    "file_paths",
     type=click.Path(exists=True, file_okay=True, dir_okay=False, path_type=Path),
-    required=True,
-    help="Path to the Python file with class definitions",
+    multiple=True,
+    help="Path to individual Python files to process (use -f multiple times for multiple files).",
 )
-def main(sequence_length, file_path):
-    """Python Randoop test generator for Python classes."""
+def main(sequence_length, repo_url, file_paths):
+    """
+    Process a GitHub repository URL or multiple Python source files and generate test cases for their classes.
+    """
     console.print("[bold blue]Randoop-Python Test Generator[/bold blue]\n")
 
-    # Simulate loading for module loading
-    simulate_loading("Loading module")
-    module = load_module(file_path)
+    # Temporary directory for repository
+    temp_dir = Path("temp_repo")
 
-    # Simulate loading for class inspection
-    simulate_loading("Inspecting classes")
-    classes = get_classes(module)
+    try:
+        shared_namespace = {}
+
+        if repo_url:
+            # If a GitHub repository URL is provided, process the repository
+            console.print("[bold green]Processing GitHub repository...[/bold green]")
+            simulate_loading("Downloading repository")
+            download_and_extract_repo(repo_url, temp_dir)
+
+            # Identify source files in the repository
+            repo_root = next(temp_dir.iterdir())  # First directory inside the extracted repo
+            simulate_loading("Identifying source files")
+            source_files = identify_source_files(repo_root)
+        elif file_paths:
+            # If files are provided via -f, process them
+            console.print("[bold green]Processing provided files...[/bold green]")
+            source_files = list(file_paths)
+        else:
+            console.print("[bold red]No repository URL or files provided. Please specify one.[/bold red]")
+            exit(1)
+
+        # Resolve dependencies and sort files
+        source_files = resolve_dependencies(source_files)
+
+        # Load all source files into the shared namespace
+        for file_path in source_files:
+            console.print(f"\n[bold yellow]Processing file: {file_path}[/bold yellow]\n")
+            simulate_loading("Loading module")
+            load_module(file_path, shared_namespace)
+
+        # Inspect classes
+        simulate_loading("Inspecting classes")
+        all_classes = [
+            (name, obj)
+            for name, obj in shared_namespace.items()
+            if isinstance(obj, type)  # Only consider class types
+        ]
+        if not all_classes:
+            console.print("[bold red]No classes found in the source files.[/bold red]")
+            exit(1)
+
+        # Generate tests
+        simulate_loading("Generating Random tests")
+        sequences, error_prone_cases, storage, instance_creation_data = randoop_test_generator(
+            all_classes, sequence_length
+        )
+
+        # Display Successful Sequences
+        console.print("\n[bold green]-----> Generated Instances and Sequences:[/bold green]")
+        for seq in sequences:
+            print(seq)
+
+        # Display Error-Prone Test Cases
+        console.print("\n[bold yellow]-----> Error-Prone Test Cases:[/bold yellow]")
+        for error in error_prone_cases:
+            print(error)
 
-    if not classes:
-        console.print(f"[bold red]No classes found in '{file_path}'.[/bold red]")
-        exit(1)
 
-    # Simulate loading for test generation
-    simulate_loading("Generating Random tests")
-    test_results = randoop_test_generator(classes, sequence_length)
+        # Write test cases
+        write_test_cases(
+            sequences=sequences,
+            storage=storage,
+            module_name="combined_namespace",
+            file_path="combined_test_cases.py",
+            instance_creation_data=instance_creation_data,
+        )
 
-    # Display Successful Sequences
-    print("\n-----> Generated Instances and Sequences:")
-    for seq in test_results["sequences"]:
-        print(seq)
+        console.print("[bold green]All tasks completed successfully![/bold green]")
 
-    print("\n-----> Error-Prone Test Cases:")
-    for error in test_results["error_cases"]:
-        print(error)
+    finally:
+        # Cleanup temporary directory if used
+        if repo_url and temp_dir.exists():
+            shutil.rmtree(temp_dir)
 
-    console.print("[bold green]All tasks completed successfully![/bold green]")
 
 if __name__ == "__main__":
     main()
diff --git a/randoop_cli/module_loader.py b/randoop_cli/module_loader.py
index 2b6e5f5..b61087e 100644
--- a/randoop_cli/module_loader.py
+++ b/randoop_cli/module_loader.py
@@ -1,9 +1,27 @@
 import importlib.util
 import sys
+import os
 
-def load_module(file_path):
-    spec = importlib.util.spec_from_file_location("module.name", file_path)
+def load_module(file_path, namespace):
+    """
+    Load a Python module from a file path into a shared namespace.
+    Skip setup.py or files that shouldn't be loaded.
+    """
+    # Skip setup.py as it causes issues during package loading
+    if file_path.name == "setup.py":
+        print(f"Skipping {file_path} due to potential issues with loading")
+        return
+
+    module_name = file_path.stem
+    spec = importlib.util.spec_from_file_location(module_name, file_path)
     module = importlib.util.module_from_spec(spec)
-    sys.modules["module.name"] = module
+    sys.modules[module_name] = module
+
     spec.loader.exec_module(module)
+
+    # Merge module attributes into the shared namespace
+    for name, obj in vars(module).items():
+        if not name.startswith("_"):  # Ignore private attributes
+            namespace[name] = obj
+
     return module
diff --git a/savings_account.py b/savings_account.py
new file mode 100644
index 0000000..fe0a05f
--- /dev/null
+++ b/savings_account.py
@@ -0,0 +1,23 @@
+from bank_account import BankAccount
+
+class SavingsAccount(BankAccount):
+    """A SavingsAccount class that extends BankAccount with interest calculation."""
+
+    def __init__(self, account_holder: str, initial_balance: float = 0.0, interest_rate: float = 0.02):
+        """
+        Initialize the savings account with an interest rate.
+        :param interest_rate: Annual interest rate as a decimal (default is 0.02 for 2%).
+        """
+        super().__init__(account_holder, initial_balance)
+        self.interest_rate = interest_rate
+
+    def add_interest(self):
+        """Add interest to the current balance."""
+        interest = self.balance * self.interest_rate
+        self.deposit(interest)
+        return self.balance
+
+    def __str__(self):
+        """Return a string representation of the savings account."""
+        return f"SavingsAccount({self.account_holder}, Balance: {self.balance}, Interest Rate: {self.interest_rate})"
+