chaining python. code example

Example 1: class chain methods python

class foo():
    def __init__(self, kind=None):
        self.kind = kind
    def my_print(self):
        print (self.kind)
        return self
    def line(self):
        self.kind = 'line'
        return self
    def bar(self):
        self.kind='bar'
        return self

Example 2: class chain methods python

c = foo().line().my_print().bar().my_print()
assert c.kind == 'bar'