IndentationError错误排查：请分析给定Python代码的问题

你的代码触发IndentationError，同时还存在其他语法问题，具体问题和修复方案如下：

1. 缩进错误（IndentationError的直接原因） #

Python依赖缩进区分代码块结构，所有if条件语句后的执行代码必须缩进（推荐使用4个空格），但你的代码里所有if块下的语句都没有缩进，导致解释器无法识别代码层级。

2. 其他语法问题 #

• 单引号嵌套冲突：input('You've come to...')中You've的单引号和外层包裹字符串的单引号冲突，需改成双引号包裹整个字符串，或用转义符\'处理内部单引号。
• 赋值运算符错误：choice3 == input(...)误用了比较运算符==，应该使用赋值运算符=来为变量赋值。
• 逻辑分支缺失：代码未处理choice2为swim、choice1不为left的情况，虽不属于语法错误，但会导致逻辑不完整。

修复后的完整代码 #

if choice1 == "left":
    choice2 = input("You've come to a lake. There is an island in the middle of the lake. Type 'wait' to wait for a boat. Type 'swim' to swim across.\n").lower()
    if choice2 == "wait":
        choice3 = input("You arrived at the island unharmed. There is a house with 3 doors. One red, one yellow, and one blue. Which colour do you choose?\n").lower()
        if choice3 == "red":
            print("Game Over.")
        elif choice3 == "yellow":
            print("You found the treasure! You Win!")
        elif choice3 == "blue":
            print("You enter a room full of beasts. Game Over!")
    elif choice2 == "swim":
        print("You were attacked by fish. Game Over!")
else:
    print("You went the wrong way. Game Over!")

内容的提问来源于stack exchange，提问作者76SadBoy