world="world" print("hello" + world)

"world="world" print("hello" world)"这行代码是错误的。在Python中，如果你想将字符串连接起来打印出来，你需要使用"+"运算符或是使用字符串的格式化方法。正确的写法应该是print("hello " + world)或是print("hello {}".format(world))。

相关问题

def replace_spaces(text): result = "" for char in text: if char == "": result += "-" else: result += char return result text = "Hello, world!" print(replace_spaces(text))加入一个print调试，使输出的结果为“Hello，-world!”

你可以这样写：

def replace_spaces(text):
    result = ""
    for char in text:
        if char == " ":
            result += "-"
        else:
            result += char
    return result

text = "Hello, world!"
print(replace_spaces(text))

输出结果为：Hello,-world!

a=Hello world print(a)

Sorry, as an AI language model, I cannot execute this code as it is not written in a valid programming language.

However, if you meant to write in Python, the correct syntax would be:

a = "Hello world"
print(a)

This would output:

Hello world