运行for i in range(6): if i%2==0: continue elif i%3: print(i,end=' ') break else: print('end')的过程
时间: 2024-05-25 09:12:51 浏览: 16
运行过程如下:
首先,`i`的取值范围是0到5,共6个数。循环从0开始,每次加1,直到5结束。
第一次循环,`i`为0,满足`i%2==0`,因此执行`continue`,跳过下面的语句。
第二次循环,`i`为1,不满足`i%2==0`,继续执行下一条语句。`i%3`为1,不等于0,因此执行`print(i,end=' ')`,输出1,同时`break`跳出循环。
因此,程序最终输出结果为:`1`
相关问题
运行以下代码的输出结果是 for i in range(6): if i%2==0:continue elif i %3: print(i,end="") break else: print ("end")
运行该代码的输出结果是 "1"。解释如下:
代码中使用了 for 循环遍历 range(6),即 0-5 的数字序列。每次循环,先判断 i 是否为偶数,如果是偶数则执行 continue,跳过该次循环;否则,判断 i 是否能被 3 整除,如果不能整除则打印 i 的值(即输出 "1"),并使用 break 结束循环;如果能被 3 整除,则执行 else 语句块,打印 "end"。由于循环只执行了一次,并且 i=1 不能被 3 整除,因此输出 "1"。
import random def init_board(): board = [] for i in range(4): row = [] for j in range(4): row.append(0) board.append(row) return board def add_new(board): empty_cells = [] for i in range(4): for j in range(4): if board[i][j] == 0: empty_cells.append((i, j)) if empty_cells: i, j = random.choice(empty_cells) board[i][j] = 2\ if random.random() < 0.9else 4 def is_game_over(board): for i in range(4): for j in range(4): if board[i][j] == 0: return False if i < 3 and board[i][j] == board[i+1][j]: return False if j < 3 and board[i][j] == board[i][j+1]: return False return True def move_left(board): for i in range(4): row = board[i] new_row = [] last_merged = False for j in range(4): if row[j] == 0: continue if len(new_row) == 0 or last_merged or new_row[-1] != row[j]: new_row.append(row[j]) last_merged = False else: new_row[-1] *= 2 last_merged = True while len(new_row) < 4: new_row.append(0) board[i] = new_row def move_right(board): for i in range(4): row = board[i] new_row = [] last_merged = False for j in range(3, -1, -1): if row[j] == 0: continue if len(new_row) == 0 or last_merged or new_row[-1] != row[j]: new_row.append(row[j]) last_merged = False else: new_row[-1] *= 2 last_merged = True while len(new_row) < 4: new_row.insert(0, 0) board[i] = new_row def move_up(board): for j in range(4): column = [board[i][j] for i in range(4)] new_column = [] last_merged = False for i in range(4): if column[i] == 0: continue if len(new_column) == 0 or last_merged or new_column[-1] != column[i]: new_column.append(column[i]) last_merged = False else: new_column[-1] *= 2 last_merged = True while len(new_column) < 4: new_column.append(0) for i in range(4): board[i][j] = new_column[i] def move_down(board): for j in range(4): column = [board[i][j] for i in range(3, -1, -1)] new_column = [] last_merged = False for i in range(3, -1, -1): if column[i] == 0: continue if len(new_column) == 0 or last_merged or new_column[-1] != column[i]: new_column.append(column[i]) last_merged = False else: new_column[-1] *= 2 last_merged = True while len(new_column) < 4: new_column.insert(0, 0) for i in range(3, -1, -1): board[i][j] = new_column[3-i] def print_board(board): for row in board: for cell in row: print("{:<6}".format(cell), end="") print() def main(): board = init_board() add_new(board) add_new(board) while not is_game_over(board): print_board(board) direction = input("输入方向(w/a/s/d):") if direction == "a": move_left(board) elif direction == "d": move_right(board) elif direction == "w": move_up(board) elif direction == "s": move_down(board) else: print("无效的方向,请重新输入!") continue add_new(board) print_board(board) print("游戏结束!") if name == "main": main()帮我为上述代码添加图形设计界面,以及计分系统
好的,为了添加图形设计界面和计分系统,我们需要使用Python中的GUI库。这里我们选择使用Pygame库来实现游戏界面和计分系统。
首先,我们需要安装Pygame库。在命令行中输入以下命令:
```
pip install pygame
```
安装完成后,我们可以开始编写代码了。
首先,我们需要导入Pygame库并初始化它:
```python
import pygame
pygame.init()
```
然后,我们需要定义一些常量来表示游戏界面的大小和颜色:
```python
SCREEN_WIDTH = 640
SCREEN_HEIGHT = 480
CELL_SIZE = 80
CELL_PADDING = 20
BACKGROUND_COLOR = (250, 248, 239)
CELL_COLORS = {
0: (205, 193, 180),
2: (238, 228, 218),
4: (237, 224, 200),
8: (242, 177, 121),
16: (245, 149, 99),
32: (246, 124, 95),
64: (246, 94, 59),
128: (237, 207, 114),
256: (237, 204, 97),
512: (237, 200, 80),
1024: (237, 197, 63),
2048: (237, 194, 46)
}
```
其中,SCREEN_WIDTH和SCREEN_HEIGHT分别表示游戏界面的宽度和高度,CELL_SIZE和CELL_PADDING分别表示每个方格的大小和间距,BACKGROUND_COLOR表示游戏界面的背景色,CELL_COLORS是一个字典,用于表示不同数字的方格的颜色。
接下来,我们需要定义一些函数来绘制游戏界面和方格:
```python
def draw_board(board, screen):
screen.fill(BACKGROUND_COLOR)
for i in range(4):
for j in range(4):
cell_color = CELL_COLORS[board[i][j]]
cell_rect = pygame.Rect(j * (CELL_SIZE + CELL_PADDING) + CELL_PADDING, i * (CELL_SIZE + CELL_PADDING) + CELL_PADDING, CELL_SIZE, CELL_SIZE)
pygame.draw.rect(screen, cell_color, cell_rect)
if board[i][j] != 0:
font = pygame.font.SysFont(None, int(CELL_SIZE * 0.4))
text = font.render(str(board[i][j]), True, (255, 255, 255))
text_rect = text.get_rect(center=cell_rect.center)
screen.blit(text, text_rect)
def draw_score(score, screen):
font = pygame.font.SysFont(None, 50)
text = font.render("Score: {}".format(score), True, (0, 0, 0))
text_rect = text.get_rect(center=(SCREEN_WIDTH // 2, SCREEN_HEIGHT - 50))
screen.blit(text, text_rect)
```
其中,draw_board函数用于绘制游戏界面,draw_score函数用于绘制得分。
然后,我们需要修改一下add_new函数,让它返回新生成的数字的位置:
```python
def add_new(board):
empty_cells = []
for i in range(4):
for j in range(4):
if board[i][j] == 0:
empty_cells.append((i, j))
if empty_cells:
i, j = random.choice(empty_cells)
board[i][j] = 2 if random.random() < 0.9 else 4
return (i, j)
else:
return None
```
接着,我们需要修改main函数,让它使用Pygame库来显示游戏界面和得分:
```python
def main():
board = init_board()
add_new(board)
add_new(board)
score = 0
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("2048")
while not is_game_over(board):
draw_board(board, screen)
draw_score(score, screen)
pygame.display.flip()
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_a:
move_left(board)
add_new_pos = add_new(board)
elif event.key == pygame.K_d:
move_right(board)
add_new_pos = add_new(board)
elif event.key == pygame.K_w:
move_up(board)
add_new_pos = add_new(board)
elif event.key == pygame.K_s:
move_down(board)
add_new_pos = add_new(board)
else:
add_new_pos = None
if add_new_pos:
score += board[add_new_pos[0]][add_new_pos[1]]
pygame.display.flip()
draw_board(board, screen)
draw_score(score, screen)
font = pygame.font.SysFont(None, 50)
text = font.render("Game Over!", True, (255, 0, 0))
text_rect = text.get_rect(center=(SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2))
screen.blit(text, text_rect)
pygame.display.flip()
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
```
最后,我们需要在代码开头添加以下代码来保证程序正确运行:
```python
if __name__ == "__main__":
main()
```
这样,我们就完成了2048游戏的图形界面和计分系统的添加。完整代码如下: