chore: 添加项目基础结构和示例代码

- 创建 .idea 目录和相关配置文件，设置项目结构
- 添加多个课堂成果示例代码，涵盖不同主题和功能
- 创建和配置 .gitignore 文件，忽略特定文件和目录

.idea/material_theme_project_new.xml

@@ -3,7 +3,9 @@
   <component name="MaterialThemeProjectNewConfig">
     <option name="metadata">
       <MTProjectMetadataState>
-        <option name="userId" value="619417ac:197d81ada1e:-7fc2" />
+        <option name="migrated" value="true" />
+        <option name="pristineConfig" value="false" />
+        <option name="userId" value="21c1c7ee:193388d497c:-7ff9" />
       </MTProjectMetadataState>
     </option>
   </component>

.idea/misc.xml

@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="Black">
+    <option name="sdkName" value="Python 3.13" />
+  </component>
   <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.13" project-jdk-type="Python SDK" />
 </project>

test.py

@@ -0,0 +1,29 @@
+import random
+import os
+import time
+jiang=["特等奖","一等奖","二等奖","三等奖","安慰奖"]
+dictionary = {"1 2":"特等奖","3 10":"一等奖","11 20":"二等奖","21 40":"三等奖","41 100":"安慰奖"}
+print("欢迎来到抽奖系统")
+while 1:
+    if input("是否抽奖（y/n）")=='y':
+        num=random.randint(1,100)
+
+        sleep_time=0.1
+        index = 0
+        for i in range(10):
+            os.system('cls')
+            print(f"正在抽奖{jiang[index]}")
+            index = (index+1) % len(jiang)
+            time.sleep(sleep_time)
+            sleep_time += 0.05
+        os.system('cls')
+
+        for key,value in dictionary.items():
+            fan=key.split(" ")
+            if num in [i for i in range(int(fan[0]),int(fan[1])+1)]:
+                print(f"恭喜您中奖了{value}")
+    else:
+        print("欢迎下次再来")
+        break
+
+os.system('pause')

第42讲抽奖系统/课堂成果/基础抽奖.py

@@ -0,0 +1,29 @@
+import random
+import os
+import time
+jiang=["特等奖","一等奖","二等奖","三等奖","安慰奖"]
+dictionary = {"1 2":"特等奖","3 10":"一等奖","11 20":"二等奖","21 40":"三等奖","41 100":"安慰奖"}
+print("欢迎来到抽奖系统")
+while 1:
+    if input("是否抽奖（y/n）")=='y':
+        num=random.randint(1,100)
+
+        sleep_time=0.1
+        index = 0
+        for i in range(10):
+            os.system('cls')
+            print(f"正在抽奖{jiang[index]}")
+            index = (index+1) % len(jiang)
+            time.sleep(sleep_time)
+            sleep_time += 0.05
+        os.system('cls')
+
+        for key,value in dictionary.items():
+            fan=key.split(" ")
+            if num in [i for i in range(int(fan[0]),int(fan[1])+1)]:
+                print(f"恭喜您中奖了{value}")
+    else:
+        print("欢迎下次再来")
+        break
+
+os.system('pause')

第42讲抽奖系统/课堂成果/抽奖系统.py

@@ -0,0 +1,141 @@
+import tkinter as tk
+import random
+
+# 奖项
+prize_list = [
+    ("好好听奖", 2),
+    ("特等奖", 8),
+    ("一等奖", 10),
+    ("二等奖", 15),
+    ("三等奖", 25),
+    ("安慰奖", 40)
+]
+prizes = [p[0] for p in prize_list]
+weights = [p[1] for p in prize_list]
+
+ITEM_HEIGHT = 40
+VISIBLE_ROWS = 5
+
+class SlotColumn:
+    def __init__(self, master, width=120, font=("微软雅黑", 16)):
+        self.canvas = tk.Canvas(master, width=width, height=ITEM_HEIGHT * VISIBLE_ROWS, bg="#fff", highlightthickness=1, highlightbackground="#ccc")
+        self.canvas.pack(side=tk.LEFT, padx=10)
+        self.font = font
+        self.width = width
+        self.center_y = (ITEM_HEIGHT * VISIBLE_ROWS) // 2
+        self.items = [random.choice(prizes) for _ in range(50)]
+        self.draw_items()
+
+        # 添加中奖框
+        self.canvas.create_rectangle(
+            2, self.center_y - ITEM_HEIGHT // 2, self.width - 2, self.center_y + ITEM_HEIGHT // 2,
+            outline="#ff6600", width=3, dash=(5, 3)
+        )
+
+    def draw_items(self):
+        self.canvas.delete("item")
+        for i, text in enumerate(self.items):
+            y = i * ITEM_HEIGHT
+            self.canvas.create_text(self.width // 2, y, text=text, font=self.font, fill="#d43f3a", tags="item")
+
+    def shift(self):
+        self.items.pop(0)
+        self.items.append(random.choice(prizes))
+        self.draw_items()
+
+    def stop_on_result(self, result_text):
+        """强制将中奖项显示在中间，并停止滚动"""
+        center_index = VISIBLE_ROWS // 2 + 1
+        self.items = [random.choice(prizes) for _ in range(center_index)] + [result_text] + [random.choice(prizes) for _ in range(20)]
+        self.draw_items()
+
+    def get_result(self):
+        return self.items[VISIBLE_ROWS // 2 + 1]
+
+
+class SlotMachineApp:
+    def __init__(self, root):
+        self.root = root
+        self.root.title("🎰 老虎机真实滚动")
+        self.root.geometry("500x580")
+        self.root.configure(bg="#ffffff")
+
+        self.title = tk.Label(root, text="🎰 老虎机幸运抽奖 🎰", font=("微软雅黑", 20), bg="#ffffff", fg="#222")
+        self.title.pack(pady=10)
+
+        self.slot_frame = tk.Frame(root, bg="#ffffff")
+        self.slot_frame.pack(pady=10)
+
+        self.columns = [SlotColumn(self.slot_frame) for _ in range(3)]
+
+        self.spin_button = tk.Button(root, text="🎯 开始抽奖", font=("微软雅黑", 16), bg="#28a745", fg="white", command=self.start_spin)
+        self.spin_button.pack(pady=20)
+
+        self.result_label = tk.Label(root, text="", font=("微软雅黑", 16), fg="#d9534f", bg="#ffffff")
+        self.result_label.pack(pady=10)
+
+        self.history = tk.Text(root, height=6, width=55, font=("微软雅黑", 10), state="disabled", bg="#f8f8f8")
+        self.history.pack(padx=20, pady=10)
+
+        self.running = False
+
+    def start_spin(self):
+        if self.running:
+            return
+
+        self.running = True
+        self.result_label.config(text="")
+        self.spin_button.config(state="disabled")
+
+        self.final_result = random.choices(prizes, weights=weights, k=1)[0]
+
+        self.delay_curves = [
+            self.generate_delay_curve(100),
+            self.generate_delay_curve(130),
+            self.generate_delay_curve(160)
+        ]
+
+        self.start_column(0)
+        self.root.after(300, lambda: self.start_column(1))
+        self.root.after(600, lambda: self.start_column(2))
+
+    def generate_delay_curve(self, steps):
+        delays = []
+        delay = 5
+        for i in range(steps):
+            delays.append(delay)
+            if delay < 30:
+                delay += 1
+            elif delay < 80:
+                delay += 2
+            else:
+                delay += 5
+        return delays
+
+    def start_column(self, index):
+        def spin():
+            if self.delay_curves[index]:
+                self.columns[index].shift()
+                delay = self.delay_curves[index].pop(0)
+                self.root.after(delay, spin)
+            else:
+                # 停止后对齐中奖项（只中间列）
+                if index == 1:
+                    self.columns[1].stop_on_result(self.final_result)
+                    self.show_result()
+        spin()
+
+    def show_result(self):
+        self.result_label.config(text=f"🎉 恭喜你抽中：{self.final_result} 🎉")
+        self.history.config(state="normal")
+        self.history.insert("end", f"🎯 抽中：{self.final_result}\n")
+        self.history.see("end")
+        self.history.config(state="disabled")
+        self.spin_button.config(state="normal")
+        self.running = False
+
+
+if __name__ == "__main__":
+    root = tk.Tk()
+    app = SlotMachineApp(root)
+    root.mainloop()