Output is different than Stdout in Python

I’m new to programming and I’m trying Leetcode. The question asks to store the answer inside nums1. When I print nums1, the stdout shows the correct answer but the output is not the same?

class Solution(object):
    def merge(self, nums1, m, nums2, n):
        """
        :type nums1: List[int]
        :type m: int
        :type nums2: List[int]
        :type n: int
        :rtype: None Do not return anything, modify nums1 in-place instead.
        """

        for x in range(n):
            nums1.remove(0)

        nums1 = nums1 + nums2
        nums1.sort()
        print(nums1)

This is what it shows:

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