numbers.txt的内容如下：

5
12
7
15
3
20
8

执行的Python代码：

def func(file_path, threshold):
    lst = []
    with open(file_path) as file:
        for line in file:
            number = int(line.strip())
            if number > threshold:
                lst.append(number)
    return lst

file_path = 'numbers.txt'
threshold = 12
selected_numbers = func(file_path, threshold)
print(selected_numbers)