A more generalized approach¶
Each of these samples has the same kind of information attached to it, so we can describe what a sample in general looks like: We can summarize these common features as: “Every sample has an inventory number and a collector”.
This abstraction is called a class. The “variables” that each object of the same class has are called attributes. In our case these are id and collector.
Let us see how to write this down in Python, step-by-step:
# Here is the most minimal class class Sample: pass # Tell Python that this is all # Create an instance and set the attributes my_sample = Sample() my_sample.id = "22-A-15" my_sample.collector = "Darwin" print("Object:", my_sample) print("ID:", my_sample.id) print("Collected by:", my_sample.collector)
Note how the output of printing an object directly is pretty awkward. We will learn how to improve that later.
There is one further important insight: Classes are data types. Try: