从Chess导入ChessEngine:Chess引擎出错

Question

我已经复习了很多遍教程，但是仍然有这个错误。在该系列的第一个视频之后，他能够显示电路板。该错误在我的导入语句中突出显示ChessEngine

这是我的主要资源：https://www.youtube.com/watch?v=EnYui0e73Rs&t=2095s

这就是错误： ImportError:无法从“Chess”（未知位置）导入名称“ChessEngine”

请暂停

我的代码如下

***import pygame as p
from Chess import ChessEngine
WIDTH = HEIGHT = 512  # optional 400
DIMENSIONS = 8  # dimensions are 8x8
SQ_SIZE = HEIGHT // DIMENSIONS
MAX_FPS = 15  # For animation
IMAGES = {}
'''
Initialize global dictionary of images. this will be called once in the main
'''
def load_images():
    pieces = ["wp", "wR", "wN", "wB", "wQ", "wK", "wB", "wN", "wR", "bp", "bR", "bN", "bB", "bQ", "bK", "bB", "bN",
              "bR"]
    for piece in pieces:
        IMAGES[piece] = p.transform.scale(p.image.load("images/" + piece + "wp.png"), (SQ_SIZE, SQ_SIZE))
#         note: we can access an image by saying 'IMAGES['wp']
'''
main driver for our code  handles user input and updating graphics 
'''
def main():
    p.init()
    screen = p.display.set_mode((WIDTH, HEIGHT))
    clock = p.time.Clock()
    screen.fill(p.Color("white"))
    gs = ChessEngine.GameState()
    print(gs.board)
    load_images()  # only operated once
    running = True
    while running:
        for e in p.event.get():
            if e.type == p.QUIT:
                running = False
            drawGameState((screen, gs))
            clock.tick(MAX_FPS)
            p.display.flip()
def drawGameState(screen, gs):
    drawBoard(screen) #draw squares on board
    drawPieces(screen, gs.board)
def drawBoard(screen):
    colors = [p.Color("white", p.Color("grey"))]
    for r in range(DIMENSIONS):
        for c in range(DIMENSIONS):
            color = colors[((r+c) % 2)]
            p.draw.rect(screen, color, p.Rect(c*SQ_SIZE, r*SQ_SIZE, SQ_SIZE, SQ_SIZE))
def drawPieces(screen, board):
    '''
    draws the pieces on the board using current gameState.board
    '''
if __name__ == "__main__":
    main()***

Answer 1

如果您看到youtube视频的文件夹结构，他有一个名为Chess的根文件夹：

| Chess
| |  > images
| |  > ChessEngine.py
| |  > __init__.py 
| ...

当您声明import时，如果存在具有导入名称的模块（文件夹或文件），python将搜索调用文件夹（根文件夹）。如果文件夹包含__init__.py文件，它将被视为一个模块

对于您的使用，您有两个选项：

1. 有一个名为Chess.py的文件，其中有一个导出的成员ChessEngine
2. 有一个名为Chess的文件夹，其中有一个公开ChessEngine成员的__init__.py文件

我想，如果您遵循链接的整个教程，他们会告诉您如何从__init__.py文件中公开成员

如果您想更好地了解the import system (Docs Python)的工作原理，可以查看文档