[python-611]:基础知识学习

py/10.py

+
+# 课程实例
+class Course:
+    def __init__(self, name, duration, level):
+        self.name = name
+        self.duration = duration
+        self.level = level
+
+    def __str__(self):
+        return f"Course: {self.name}, Duration: {self.duration}, Level: {self.level}"
+
+# 创建课程实例
+course1 = Course("Python Basics", "2 weeks", "Beginner")
+course2 = Course("Web Development with Django", "4 weeks", "Intermediate")
+course3 = Course("Data Analysis with Pandas", "3 weeks", "Advanced")
+
+# 打印课程信息
+print(course1)
+print(course2)
+print(course3)
+
+# Python列表实例
+courses = [course1, course2, course3]
+
+# 打印所有课程信息
+for course in courses:
+    print(course)
+
+# Python字典实例
+course_dict = {
+    "Python Basics": course1,
+    "Web Development with Django": course2,
+    "Data Analysis with Pandas": course3
+}
+
+print("=====================================")
+# 打印字典中所有课程信息
+for course_name, course_obj in course_dict.items():
+    print(f"{course_name}: {course_obj}")
+
+

py/6.py

+
+# 你是一位资深的python老师，请生成如下需求的代码。需求是：设计一些列代码实例课程，课程讲解数据类型转换。
+
+# 课程1：整数转换为字符串
+num = 123
+str_num = str(num)
+print(str_num)
+
+# 课程2：浮点数转换为整数
+float_num = 3.14
+int_num = int(float_num)
+print(int_num)
+
+# 课程3：字符串转换为整数
+str_num = "456"
+int_num = int(str_num)
+print(int_num)
+
+# 课程4：字符串转换为浮点数
+str_float = "3.14"
+float_num = float(str_float)
+print(float_num)
+
+# 课程5：整数转换为布尔值
+num = 0
+bool_num = bool(num)
+print(bool_num)
+
+# 课程6：布尔值转换为整数
+bool_val = True
+int_val = int(bool_val)
+print(int_val)
+
+
+

py/7.py

+
+# 这段代码展示了逻辑运算符的基本用法，包括逻辑与、逻辑或、逻辑非以及组合运算符的示例。
+# 学生可以运行这段代码来理解逻辑运算符的工作原理。
+# 逻辑运算符示例课程
+
+# 逻辑与运算符示例
+print("逻辑与运算符示例：")
+a = True
+b = False
+print(a and b)  # False
+print(a and a)  # True
+
+# 逻辑或运算符示例
+print("\n逻辑或运算符示例：")
+print(a or b)  # True
+print(b or b)  # False
+
+# 逻辑非运算符示例
+print("\n逻辑非运算符示例：")
+print(not a)  # False
+print(not b)  # True
+
+# 组合运算符示例
+print("\n组合运算符示例：")
+c = True
+d = False
+print((a and b) or (c and d))  # False
+print((a or b) and (c or d))  # True
+
+
+

py/8.py

+
+# 以下代码示例包括了Python条件语句、循环语句、break和continue的用法。
+# 学生可以通过这些实例课程来学习和理解Python中条件语句和循环语句的使用方法，
+# 以及如何使用break和continue控制循环的执行流程。
+# Python条件语句示例
+num = 10
+
+if num > 0:
+    print("数字是正数")
+elif num < 0:
+    print("数字是负数")
+else:
+    print("数字是零")
+
+# Python循环语句示例
+for i in range(5):
+    print("当前数字是:", i)
+
+# break示例
+for i in range(10):
+    if i == 5:
+        break # 终止当前所在循环
+    print(i)
+
+# continue示例
+for i in range(10):
+    if i % 2 == 0:
+        continue # 终止此次循环，继续执行下一次循环
+    print(i)
+
+
+

py/9.py

+
+
+# 课程1：介绍Python函数的基本概念
+def greet(name):
+    print("Hello, " + name + "!")
+
+greet("Alice")
+greet("Bob")
+
+# 课程2：讲解函数的参数和返回值
+def add_numbers(num1, num2):
+    return num1 + num2
+
+result = add_numbers(5, 3)
+print("5 + 3 =", result)
+
+# 课程3：讲解函数的默认参数和关键字参数
+def greet_with_message(name, message="Good morning"):
+    print(message + ", " + name + "!")
+
+greet_with_message("Alice")
+greet_with_message("Bob", "Good evening")
+
+# 课程4：讲解函数的可变参数
+def sum_numbers(*args):
+    total = 0
+    for num in args:
+        total += num
+    return total
+
+result = sum_numbers(1, 2, 3, 4, 5)
+print("1 + 2 + 3 + 4 + 5 =", result)
+
+# 课程5：讲解函数的递归调用
+def factorial(n):
+    if n == 0:
+        return 1
+    else:
+        return n * factorial(n-1)
+
+result = factorial(5)
+print("5! =", result)
+
+