# Patient Information
patient_data = {
    "patient_id": "12345",
    "name": "John Doe",
    "age": 45,
    "diagnosis": "Hypertension",
    "medications": ["Lisinopril", "Amlodipine"]
}
patient_id = patient_data.get("patient_id")
name = patient_data.get("name")
blood_type = patient_data.get("blood_type", "Unknown")  # Key doesn''''t exist, returns default value

print(f"Patient ID: {patient_id}")
print(f"Name: {name}")
print(f"Blood Type: {blood_type}")

# Medical Records
medical_records = {
    "record_001": {"date": "2023-01-15", "diagnosis": "Diabetes", "treatment": "Metformin"},
    "record_002": {"date": "2023-03-22", "diagnosis": "Asthma", "treatment": "Inhaler"}
}
record_001 = medical_records.get("record_001")
diagnosis_001 = record_001.get("diagnosis") if record_001 else "No record found"
treatment_003 = medical_records.get("record_003", {}).get("treatment", "No treatment found")

print(f"Diagnosis for record 001: {diagnosis_001}")
print(f"Treatment for record 003: {treatment_003}")

# Hospital Data
hospital_data = {
    "hospital_id": "H001",
    "name": "City Hospital",
    "departments": {
        "Cardiology": {"head": "Dr. Smith", "beds": 50},
        "Neurology": {"head": "Dr. Johnson", "beds": 40}
    }
}
cardiology_head = hospital_data.get("departments", {}).get("Cardiology", {}).get("head", "Unknown")
neurology_beds = hospital_data.get("departments", {}).get("Neurology", {}).get("beds", "Unknown")

print(f"Head of Cardiology: {cardiology_head}")
print(f"Number of beds in Neurology: {neurology_beds}")