fp = builtins.open(filename, “rb”) FileNotFoundError: [Errno 2] 沒有這樣的文件或目錄：

Question

我正在使用 flask，

在我的config.py中，我設置了這個UPLOAD_FOLDER = '/Users/kanel/Documents/Developments/upload'

和 controller 來處理文件上傳。

@app.route('/uploaded', methods = ['GET', 'POST'])
def upload_file():
   if request.method == 'POST':
      f = request.files['file']
      path = os.path.join(app.config['UPLOAD_FOLDER'], f.filename)
      print(path)
      model= ResNet50(weights='imagenet')
      img = image.load_img(path, target_size=(224,224))
      x = image.img_to_array(img)
      x = np.expand_dims(x, axis=0)
      x = preprocess_input(x)
      preds = model.predict(x)
      preds_decoded = decode_predictions(preds, top=3)[0] 
      print(decode_predictions(preds, top=3)[0])
      f.save(path)
      return render_template('uploaded.html', title='Success', predictions=preds_decoded, user_image=f.filename)

我收到了這個錯誤：

File "/opt/anaconda3/lib/python3.7/site-packages/PIL/Image.py", line 2766, in open
    fp = builtins.open(filename, "rb")
FileNotFoundError: [Errno 2] No such file or directory: '/Users/kanel/Documents/Developments/upload/chest-example.png'

我的路徑有什么問題？ 據說文件不存在，但路徑在那里！

Answer 1

問題是該文件在您嘗試從中加載它的位置不存在。 在使用 PIL 打開它之前，您應該將文件保存到磁盤。 f.save(path)應該在執行img = image.load_img(path, target_size=(224,224))之前出現