debug.py

import pysnooper
@pysnooper.snoop()
def findDuplicates(nums):
        """
        :type nums: List[int]
        :rtype: List[int]
        """
        res = []
        for i in range(len(nums)):
            while i != nums[i]-1:
                if nums[i] != nums[nums[i]-1]:
                    tmp = nums[i]
                    nums[i] = nums[nums[i]-1]
                    nums[tmp-1] = tmp
                else:
                    res.append(nums[i])
                    break
        return res

@pysnooper.snoop()
def transpose(A):
        """
        :type A: List[List[int]]
        :rtype: List[List[int]]
        """
        res = []
        for i in range(len(A[0])):
            res.append([A[0][i]])
        for col in range(1,len(res)):
            for i in range(len(A[0])):
                res[i].append(A[col][i])
        return res



if __name__=='__main__':
    # findDuplicates([4,3,2,7,8,2,3,1])
    x = [[1,2,3],[4,5,6]]
    transpose(x)