倒序文本

# Reverse text in various modes
def reverse_chars(text):
    return text[::-1]

def reverse_words(text):
    return "\n".join(" ".join(line.split()[::-1]) for line in text.splitlines())

def reverse_lines(text):
    return "\n".join(text.splitlines()[::-1])

text = "Hello World\nFoo Bar"
print(reverse_chars(text))
print(reverse_words(text))
print(reverse_lines(text))