用一个元素反转一个列表就不会有[重复]

我注意到从一个函数返回一个列表(包含一个元素),然后尝试使用reverse()反转它时出现了奇怪的行为

我在这里提炼出来:

def myFunction():
  return ["The Smiths"]

nums = [5,4,3,2,1]
nums.reverse()
print nums # 1,2,3,4,5 - fine!

# lets use one element in a list
something = ["Gwen Stefani"]
something.reverse()
print something # ["Gwen Stefani"] also fine

# now let's do the same, but from a function
a = myFunction()
print a # The Smiths
print a.reverse() # None
print a[::-1] # The Smiths