Number of Steps to Reduce a Number to Zero LeetCode solution in Python

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# Runtime: 70 ms (Top 5.12%) | Memory: 13.9 MB (Top 52.31%)
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class Solution:
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    def numberOfSteps(self, num: int) -> int:
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        count = 0
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        while num:
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            if num % 2:
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                num = num - 1
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            else:
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                num = num // 2
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            count += 1
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        return count