python入门代码

以下是一个简单的Python入门代码示例：

# 打印Hello World
print("Hello World")

# 定义一个变量并赋值
x = 5

# 条件判断
if x > 0:
    print("x是正数")
elif x < 0:
    print("x是负数")
else:
    print("x是零")

# 循环
for i in range(5):
    print(i)

# 函数定义
def square(num):
    return num * num

# 调用函数
result = square(3)
print(result)

这段代码展示了Python的一些基本语法，包括打印输出、变量赋值、条件判断、循环和函数定义等。希望对你的Python入门有所帮助！\[1\]\[2\]\[3\]
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