Python如何实现感知器的逻辑电路

pip install pytest

from perception import and_operate, nand_operate, or_operate


def test_and_operate():
 """
 测试与门
 :return:
 """
 assert and_operate(1, 1) == 1
 assert and_operate(1, 0) == 0
 assert and_operate(0, 1) == 0
 assert and_operate(0, 0) == 0


def test_nand_operate():
 """
 测试与非门
 :return:
 """
 assert nand_operate(1, 1) == 0
 assert nand_operate(1, 0) == 1
 assert nand_operate(0, 1) == 1
 assert nand_operate(0, 0) == 1


def test_or_operate():
 """
 测试或门
 :return:
 """
 assert or_operate(1, 1) == 1
 assert or_operate(1, 0) == 1
 assert or_operate(0, 1) == 1
 assert or_operate(0, 0) == 0

import numpy as np


def step_function(x):
 """
 阶跃函数
 :param x:
 :return:
 """
 if x <= 0:
  return 0
 else:
  return 1


def and_operate(x1, x2):
 """
 与门
 :param x1:
 :param x2:
 :return:
 """
 x = np.array([x1, x2])
 w = np.array([0.5, 0.5])
 b = -0.7
 return step_function(np.sum(w * x) + b)


def nand_operate(x1, x2):
 """
 与非门
 :param x1:
 :param x2:
 :return:
 """
 x = np.array([x1, x2])
 w = np.array([-0.5, -0.5])
 b = 0.7
 return step_function(np.sum(w * x) + b)


def or_operate(x1, x2):
 """
 或门
 :param x1:
 :param x2:
 :return:
 """
 x = np.array([x1, x2])
 w = np.array([0.5, 0.5])
 b = -0.3
 return step_function(np.sum(w * x) + b)

========================================================================== test session starts ===========================================================================
platform darwin -- Python 3.6.8, pytest-5.1.2, py-1.8.0, pluggy-0.12.0 -- /Users/mac/.virtualenvs/work/bin/python3
...
collected 3 items                                      

test_perception.py::test_and_operate PASSED                              [ 33%]
test_perception.py::test_nand_operate PASSED                              [ 66%]
test_perception.py::test_or_operate PASSED                               [100%]

=========================================================================== 3 passed in 0.51s ============================================================================

from perception import and_operate, nand_operate, or_operate, xor_operate

def test_xor_operate():
 """
 测试异或门
 :return:
 """
 assert xor_operate(1, 1) == 0
 assert xor_operate(1, 0) == 1
 assert xor_operate(0, 1) == 1
 assert xor_operate(0, 0) == 0

def xor_operate(x1, x2):
 """
 异或门
 :param x1:
 :param x2:
 :return:
 """
 s1 = nand_operate(x1, x2)
 s2 = or_operate(x1, x2)
 return and_operate(s1, s2)

========================================================================== test session starts ===========================================================================
platform darwin -- Python 3.6.8, pytest-5.1.2, py-1.8.0, pluggy-0.12.0 -- /Users/mac/.virtualenvs/work/bin/python3
...
collected 4 items                                      

test_perception.py::test_and_operate PASSED                              [ 25%]
test_perception.py::test_nand_operate PASSED                              [ 50%]
test_perception.py::test_or_operate PASSED                               [ 75%]
test_perception.py::test_xor_operate PASSED                              [100%]

=========================================================================== 4 passed in 0.60s ============================================================================