human
I found an interesting problem on https://leetcode.com/problems/gray-code/:
The gray code is a binary numeral system where two successive values differ in only one bit.

Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0.

Example 1:

Input: 2
Output: [0,1,3,2]
Explanation:
00 - 0
01 - 1
11 - 3
10 - 2

For a given n, a gray code sequence may not be uniquely defined.
For example, [0,2,3,1] is also a valid gray code sequence.

00 - 0
10 - 2
11 - 3
01 - 1

Example 2:

Input: 0
Output: [0]
Explanation: We define the gray code sequence to begin with 0.
             A gray code sequence of n has size = 2n, which for n = 0 the size is 20 = 1.
             Therefore, for n = 0 the gray code sequence is [0].

I tried it in Python, but could not do it. Can you solve it?

Write me a Python program to print the sequence of gray code?
assistant
#Here is Python program to print the sequence of gray code.

class Solution:
     def grayCode(self, n):
         """
         :type n: int
         :rtype: List[int]
         """
         return [i >> 1 ^ i for i in range(1 << n)]