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yiming666a
python-tutorial
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01_hello_world.py
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# ============================================================
# 第01章:Hello World & 基础输出
# ============================================================
# 这是每个程序员的第一步!
# 运行方式:python 01_hello_world.py
# ============================================================
# 1. 最简单的输出
print("Hello, World!")
print("你好,世界!")
# 2. print 可以输出各种内容
print(42) # 整数
print(3.14) # 小数
print(True) # 布尔值
# 3. 用逗号连接多个内容(自动加空格)
print("我叫", "小明", "今年", 18, "岁")
# 4. 用 end 参数控制结尾(默认是换行)
print("第一行", end=" ")
print("还在同一行")
# 5. 用 sep 参数控制分隔符
print("苹果", "香蕉", "橙子", sep=" | ")
# 6. 转义字符
print("第一行\n第二行") # \n 换行
print("姓名\t年龄") # \t 制表符(Tab)
# ============================================================
# 🏋️ 练习题:
# 1. 打印你自己的名字
# 2. 打印一个由 * 组成的正方形(5x5)
# ============================================================
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