I’m trying to practice coding again and currently having problems with figuring out why my function doesn’t work.

Here’s my sample Table for reference:

and here’s the function I created to categorize the data:

def blood_pressure_cat(diastolic, systolic):
    """
    diastolic: float
    systolic: float
    """
    
    if systolic <= 90 and diastolic <= 60:
        return "Hypotension"
    elif systolic < 120 and diastolic < 80:
        return "Normal"
    elif systolic < 130 and diastolic < 80:
        return "Elevated"
    elif systolic < 140 and diastolic < 90:
        return "Stage 1"
    elif systolic < 180 and diastolic < 90:
        return "Stage 2"
    elif systolic >= 180 and diastolic >= 90:
        return "Hypertensive Crisis"
    else:
        return np.nan

This is how I execute my function:

blood_pressure_cat(DF["diastolic"], DF["systolic"])

And getting this error:

ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

If I change the “and”s in that function I get this one instead:

Cannot perform 'rand_' with a dtyped [float64] array and scalar of type [bool]

Can somebody help me understand why it is not working or if there’s any alternative way to run this code?