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import numpy as np


class SimplePerceptron:

    def __init__(self, epochs=20, learning_rate=0.1, persistence=2):
        self.epochs = epochs
        self.learning_rate = learning_rate
        self.persistence = persistence

    def step(self, z):
        return np.where(z >= 0, 1, 0)

    def activate(self, z):
        return self.step(z)

    def _predict(self …

>>> from bs4 import BeautifulSoup
>>> def my_tag(tag):
...     return (tag.attrs.get("data-urlRoot") == "/json")
...
>>> data = "<div data-urlRoot='/json'></div>"
>>> soup = BeautifulSoup(data, "html.parser")
>>> tags = soup.find_all(my_tag)
>>> tags
[]