bp神经网络python原码

你可以按照以下步骤来获取bp神经网络的Python原码：
1. 首先，在Python的安装目录下创建一个文件夹，可以命名为"workplace"或其他名称。这个文件夹将用于存放从Gitee下载的源代码文件。
2. 接下来，你可以访问我老师大神的人工智能教程，该教程非常适合零基础的学习者，通俗易懂。你可以在该教程中找到bp神经网络的Python原码。教程链接为：http://blog.csdn.net/jiangjunshow。
3. 如果你在教程中没有找到整合在一起的代码，你可以查找我的资源，并下载名为"NeurialNet.ipynb"的文件。将该文件放入之前创建的目录中，然后执行代码即可。

希望以上步骤对你有所帮助！<span class="em">1</span><span class="em">2</span><span class="em">3</span>

相关问题

python 原码反码补码移码转换

以下是Python中原码、反码、补码、移码的转换方法：

1. 原码转反码：将原码符号位不变，其余各位取反即可。

def original_to_complement(original):
    if original[0] == '0':
        return original
    else:
        complement = ''
        for i in range(1, len(original)):
            complement += '0' if original[i] == '1' else '1'
        return complement

2. 反码转补码：将反码最后一位加1即可。

def complement_to_code(complement):
    code = ''
    carry = 1
    for i in range(len(complement) - 1, 0, -1):
        if complement[i] == '0' and carry == 1:
            code = '1' + code
            carry = 0
        elif complement[i] == '1' and carry == 1:
            code = '0' + code
        else:
            code = complement[i] + code
    code = complement[0] + code
    return code

3. 原码转补码：先将原码转换为反码，再将反码转换为补码即可。

def original_to_code(original):
    complement = original_to_complement(original)
    code = complement_to_code(complement)
    return code

4. 补码转移码：将补码最高位取出，其余各位不变即可。

def code_to_excess(code):
    excess = code[0]
    for i in range(1, len(code)):
        excess += '0' if code[i] == '0' else '1'
    return excess

俄罗斯方块python原码

以下是一个简单的俄罗斯方块游戏的 Python 原码：

import pygame
import random
 
# 初始化 Pygame
pygame.init()
 
# 游戏区域大小
size = (320, 480)
screen = pygame.display.set_mode(size)
 
# 游戏区域颜色
bg_color = (255, 255, 255)
 
# 游戏区域边界大小
border_size = 20
 
# 方块大小
block_size = 20
 
# 方块移动速度
block_speed = 1
 
# 方块下落速度
fall_speed = 1
 
# 方块颜色
colors = [
    (255, 0, 0),
    (0, 255, 0),
    (0, 0, 255),
    (255, 255, 0),
    (0, 255, 255),
    (255, 0, 255),
    (128, 128, 128),
]
 
# 方块类型
blocks = {
    0: [[1, 1, 1], [0, 1, 0]],
    1: [[1, 1, 0], [0, 1, 1]],
    2: [[0, 1, 1], [1, 1, 0]],
    3: [[1, 1], [1, 1]],
    4: [[1, 0, 0], [1, 1, 1]],
    5: [[0, 0, 1], [1, 1, 1]],
    6: [[1, 1, 1, 1]],
}
 
# 方块初始位置
block_x = 4
block_y = 0
 
# 随机生成方块
current_block = random.choice(list(blocks.keys()))
current_block_rotation = 0
current_block_color = random.choice(colors)
 
# 游戏区域数组
board = [[0 for x in range(10)] for y in range(20)]
 
# 循环更新游戏区域
done = False
while not done:
    # 监听事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                # 左移方块
                if all(board[block_y + i][block_x - 1] == 0 for i, row in enumerate(blocks[current_block][current_block_rotation])):
                    block_x -= 1
            elif event.key == pygame.K_RIGHT:
                # 右移方块
                if all(board[block_y + i][block_x + len(blocks[current_block][current_block_rotation][0])] == 0 for i, row in enumerate(blocks[current_block][current_block_rotation])):
                    block_x += 1
            elif event.key == pygame.K_UP:
                # 旋转方块
                new_rotation = (current_block_rotation + 1) % len(blocks[current_block])
                if all(board[block_y + i][block_x + j] == 0 for i, row in enumerate(blocks[current_block][new_rotation]) for j, col in enumerate(row)):
                    current_block_rotation = new_rotation
            elif event.key == pygame.K_DOWN:
                # 快速下落方块
                while all(board[block_y + i + 1][block_x + j] == 0 for i, row in enumerate(blocks[current_block][current_block_rotation]) for j, col in enumerate(row)):
                    block_y += 1
 
    # 更新方块位置
    if fall_speed % 10 == 0:
        if all(board[block_y + i + 1][block_x + j] == 0 for i, row in enumerate(blocks[current_block][current_block_rotation]) for j, col in enumerate(row)):
            block_y += 1
        else:
            # 方块落地
            for i, row in enumerate(blocks[current_block][current_block_rotation]):
                for j, col in enumerate(row):
                    if col == 1:
                        board[block_y + i][block_x + j] = current_block_color
            # 生成新方块
            current_block = random.choice(list(blocks.keys()))
            current_block_rotation = 0
            current_block_color = random.choice(colors)
            block_x = 4
            block_y = 0
    fall_speed += 1
 
    # 绘制游戏区域
    screen.fill(bg_color)
    pygame.draw.rect(screen, (0, 0, 0), pygame.Rect(border_size, border_size, block_size * 10, block_size * 20), 1)
    for i, row in enumerate(board):
        for j, col in enumerate(row):
            if col != 0:
                pygame.draw.rect(screen, col, pygame.Rect(border_size + j * block_size, border_size + i * block_size, block_size, block_size))
    for i, row in enumerate(blocks[current_block][current_block_rotation]):
        for j, col in enumerate(row):
            if col == 1:
                pygame.draw.rect(screen, current_block_color, pygame.Rect(border_size + (block_x + j) * block_size, border_size + (block_y + i) * block_size, block_size, block_size))
 
    pygame.display.flip()
 
    # 控制游戏速度
    pygame.time.wait(50)
 
# 退出 Pygame
pygame.quit()

此代码是一个简单的实现，可以根据需要进行修改和扩展。