Pydub出口退回Errno 2

Question

我正在使用Pydub来获取音频文件，并根据存储在数据帧中的时间将其归档。我要切片的代码如下：

def wav_slice(infile, outfilename, start_ms, end_ms):
    """
    This piece of code performs the slicing of the wave file
    according to the time values that are returned back 
    by the Cobalt engine.
    """
    input = AudioSegment.from_file(location)
    print(input)
    reqd_part = input[start_ms:end_ms]
    reqd_part.export(outfilename, format="wav")

数据导入正常。当我尝试写出数据时，我不断收到此错误：

[Errno 2] No such file or directory: '/Users/my_name/Desktop/blue_canoe/training_data_trimmed/l_sound/1494932479912.wav'

代码的重点是创建文件并将数据写入其中。我已经尝试调试了大约一天，现在仍然很幸运。任何想法为什么会这样？