排序、打开和写入文件

# 打开文件并写入数据
def write_to_file(filename, data):
    try:
        with open(filename, 'w') as file:
            for item in data:
                file.write(f"{item}\n")
    except IOError as e:
        print(f"Error writing to file: {e}")

# 读取文件并进行排序
def read_and_sort_file(filename):
    try:
        with open(filename, 'r') as file:
            data = [int(line.strip()) for line in file]
            sorted_data = sorted(data)
            return sorted_data
    except IOError as e:
        print(f"Error reading file: {e}")

# 示例数据
data = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5]

# 写入文件
write_to_file('data.txt', data)

# 读取并排序文件
sorted_data = read_and_sort_file('data.txt')
print("Sorted data:", sorted_data)