Functions, classes, and methods

Python allows for defining functions and classes with methods. A class with methods is basically similar to a function block in ST, or classes in languages such as C++, Java, or C#. However, Python does not support interfaces.

For detailed information, see the Python documentation for defining ‎⮫ Functions and ‎⮫ Classes.

Examples: Functions, classes, and methods

#defining a function with name sum and two parameters a and b:
def sum(a, b):
    return a + b # we return the sum of a and b.

# we can now call the function defined above:
print(sum(5,7))

# Now we define a class Foo:
class Foo:
    # The class gets a method "bar".
    # Note: for methods, the first parameter is always "self" and
    # points to the current instance. This is similar to "this" in
    # ST and other languages.
    def bar(self, a, b):
        print("bar(%s,%s)" % (a,b))

# We create an instance of the class:
f = Foo()

# We call the method bar on the instance.
f.bar("some", "params")