正如John在评论中所说，您可以使用str.join来实现这一点：

>>> x = input()
Hello
>>> ' '.join(x)
'H e l l o'

如果要像这样拆分文本：'lorem ipsum'到['lorem','ipsum']，您可以使用x = string.split()。

#It will take space as a {character} and 'space' it.
x = input("Enter:") # hello world
print(" ".join(x))  # h e l l o _ w o r l d  {*_ as a space character}

#If you not wanted space as a {character}
y=input("Enter: ")  # hello world
y=y.replace(" ","")                        #Removed spaces
print(" ".join(y))  # h e l l o w o r l d