输入文本文件中的最小最大值和平均值

def read_numbers_from_file(file_path):
    numbers = []

    try:
        with open(file_path, 'r') as file:
            for line in file:
                try:
                    number = float(line)
                    numbers.append(number)
                except ValueError:
                    print(f"Cannot convert '{line.strip()}' to a number.")
    except FileNotFoundError:
        print(f"File '{file_path}' not found.")

    return numbers


def calculate_min_max_avg(numbers):
    if not numbers:
        return None, None, None

    min_value = min(numbers)
    max_value = max(numbers)
    avg_value = sum(numbers) / len(numbers)

    return min_value, max_value, avg_value


if __name__ == '__main__':
    file_path = "input.txt"  # Replace with the path to your input file
    numbers = read_numbers_from_file(file_path)
    min_value, max_value, avg_value = calculate_min_max_avg(numbers)

    if min_value is not None:
        print(f"Minimum value: {min_value}")
        print(f"Maximum value: {max_value}")
        print(f"Average value: {avg_value}")
    else:
        print("No numbers found in the file.")