Python Debugging Challenge

Fix bugs in a Python function that processes customer data.

Challenge Description

In this challenge, you'll debug a Python function that processes customer data.

You're working on a customer data processing system. The function below is supposed to calculate the total purchase amount for each customer and identify VIP customers (those who spent over $1000). However, it contains several bugs.

Your task is to identify and fix all the bugs in the function.

def process_customer_data(customers):
    """
    Process customer data to calculate total purchases and identify VIP customers.
    
    Args:
        customers: List of dictionaries with customer data.
            Each dictionary has 'name', 'purchases' (list of amounts).
    
    Returns:
        Dictionary with customer names as keys and dictionaries as values.
        Each value dictionary has 'total' (total purchase amount) and 'is_vip' (boolean).
    """
    results = []
    
    for customer in customers:
        name = customer['name']
        purchases = customer['purchases']
        
        # Calculate total purchases
        total = 0
        for purchase in purchases:
            total += purchase
        
        # Determine if customer is VIP (spent over $1000)
        is_vip = False
        if total >= 1000:
            is_vip = True
        
        # Add customer to results
        results[name] = {
            'total': total,
            'is_vip': is_vip
        }
    
    return results

# Example usage:
customers = [
    {'name': 'Alice', 'purchases': [120, 900, 50]},
    {'name': 'Bob', 'purchases': [300, 200]},
    {'name': 'Charlie', 'purchases': [1200, 300, 50]}
]

result = process_customer_data(customers)
print(result)