前言
本文将围绕 Python 编程代码展开说明，通过多个经典案例帮助理解 Python 代码大全及简单实现。
1、Python 编程例子有哪些？
Python 编程经典例子：
- 画爱心表白：图形都是由一系列的点 (X, Y) 构成的曲线，由于 X, Y 满足一定的关系，所以就可以建立模型，建立 expression，当满足时，两个（for X in range；for Y in range）就会每行每列的打印。
- 快递查询工具：此 Python 小项目需要用到 json 与 requests 两个库，还需调用 API。
- 用 Python 编程完成鼠标模拟：需要调用 OpenCV 框架。
扩展资料：
Python 的设计目标之一是让代码具备高度的可阅读性。它设计时尽量使用其它语言经常使用的标点符号和英文单字，让代码看起来整洁美观。它不像其他的静态语言如 C、Pascal 那样需要重复书写声明语句，也不像它们的语法那样经常有特殊情况和意外。
Python 开发者有意让违反了缩进规则的程序不能通过编译，以此来强制程序员养成良好的编程习惯。并且 Python 语言利用缩进表示语句块的开始和退出，而非使用花括号或者某种关键字。增加缩进表示语句块的开始，而减少缩进则表示语句块的退出，缩进成为了语法的一部分。
2、Python 有趣的编程代码
以下是一个简易版贪吃蛇的代码，虽然结构简单，但是该有的功能都是完整的，可玩性也不错。
class Point:
row = 0
col = 0
def __init__(self, row, col):
self.row = row
self.col = col
def copy(self):
return Point(row=self.row, col=self.col)
# 初始框架
import pygame
import random
# 初始化
pygame.init()
W = 800
H = 600
ROW = 30
COL = 40
size = (W, H)
window = pygame.display.set_mode(size)
pygame.display.set_caption('')
bg_color = (255, 255, 255)
snake_color = (200, 200, 200)
head = Point(row=int(ROW/2), col=int(COL/))
head_color = (, , )
snakes = [
Point(row=head.row, col=head.col+),
Point(row=head.row, col=head.col+),
Point(row=head.row, col=head.col+)
]
():
:
pos = Point(row=random.randint(, ROW-), col=random.randint(, COL-))
is_coll =
head.row == pos.row head.col == pos.col:
is_coll =
snake snakes:
snake.row == pos.row snake.col == pos.col:
is_coll =
is_coll:
pos
food = gen_food()
food_color = (, , )
direct =
():
cell_width = W / COL
cell_height = H / ROW
left = point.col * cell_width
top = point.row * cell_height
pygame.draw.rect(
window, color,
(left, top, cell_width, cell_height)
)
quit_game =
clock = pygame.time.Clock()
quit_game:
event pygame.event.get():
event. == pygame.QUIT:
quit_game =
event. == pygame.KEYDOWN:
event.key == event.key == :
direct [, ]:
direct =
event.key == event.key == :
direct [, ]:
direct =
event.key == event.key == :
direct [, ]:
direct =
event.key == event.key == :
direct [, ]:
direct =
eat = (head.row == food.row head.col == food.col)
eat:
food = gen_food()
snakes.insert(, head.copy())
eat:
snakes.pop()
direct == :
head.col -=
direct == :
head.col +=
direct == :
head.row -=
direct == :
head.row +=
dead =
head.col < head.row < head.col >= COL head.row >= ROW:
dead =
snake snakes:
head.col == snake.col head.row == snake.row:
dead =
dead:
()
quit_game =
pygame.draw.rect(window, bg_color, (, , W, H))
snake snakes:
rect(snake, snake_color)
rect(head, head_color)
rect(food, food_color)
pygame.display.flip()
clock.tick()
