如何使用python获得正确的正值区域？

numbers = [-5, -3, 0, 2, 4]
positive_numbers = [num if num > 0 else 0 for num in numbers]
print(positive_numbers)  # 输出: [0, 0, 0, 2, 4]

import numpy as np

numbers = np.array([-5, -3, 0, 2, 4])
positive_numbers = np.maximum(numbers, 0)
print(positive_numbers)  # 输出: [0 0 0 2 4]

numbers = [-5, -3, 0, 2, 4]
positive_numbers = list(map(lambda x: x if x > 0 else 0, numbers))
print(positive_numbers)  # 输出: [0, 0, 0, 2, 4]

# 使用生成器表达式
positive_numbers_gen = (num if num > 0 else 0 for num in numbers)