a
    h                     @   sp   d dl Z d dlZd dlmZmZmZmZ d dlmZ ddl	m
Z
 ddlmZmZ ddlmZ G dd	 d	eZdS )
    N)AnyCallableOptionalUnion)urlparse   )default_loader)download_and_extract_archiveverify_str_arg)VisionDatasetc                
       s   e Zd ZdZdZdZddddefeee	j
f eee ee eeeee	j
f gef dd fdd	Zed
ddZeeeef dddZed
ddZdd
ddZed
ddZ  ZS )CLEVRClassificationa  `CLEVR <https://cs.stanford.edu/people/jcjohns/clevr/>`_  classification dataset.

    The number of objects in a scene are used as label.

    Args:
        root (str or ``pathlib.Path``): Root directory of dataset where directory ``root/clevr`` exists or will be saved to if download is
            set to True.
        split (string, optional): The dataset split, supports ``"train"`` (default), ``"val"``, or ``"test"``.
        transform (callable, optional): A function/transform that takes in a PIL image or torch.Tensor, depends on the given loader,
            and returns a transformed version. E.g, ``transforms.RandomCrop``
        target_transform (callable, optional): A function/transform that takes in them target and transforms it.
        download (bool, optional): If true, downloads the dataset from the internet and puts it in root directory. If
            dataset is already downloaded, it is not downloaded again.
        loader (callable, optional): A function to load an image given its path.
            By default, it uses PIL as its image loader, but users could also pass in
            ``torchvision.io.decode_image`` for decoding image data into tensors directly.
    z3https://dl.fbaipublicfiles.com/clevr/CLEVR_v1.0.zipZ b11922020e72d0cd9154779b2d3d07d2trainNF)rootsplit	transformtarget_transformdownloadloaderreturnc           	         s"  t |dd| _t j|||d || _t| jd | _| jtt	| j
jj | _|r`|   |  sptdt| jd| jd| _|  | jdkrt| jd	 d
| j d }t|}W d    n1 s0    Y  dd |d	 D   fdd| jD | _nd gt| j | _d S )Nr   )r   valtest)r   r   ZclevrzHDataset not found or corrupted. You can use download=True to download itZimages*r   ZscenesZCLEVR_z_scenes.jsonc                 S   s   i | ]}|d  t |d qS )Zimage_filenameZobjects)len).0Zscene r   H/var/www/auris/lib/python3.9/site-packages/torchvision/datasets/clevr.py
<dictcomp>=       z0CLEVRClassification.__init__.<locals>.<dictcomp>c                    s   g | ]} |j  qS r   )name)r   
image_filenum_objectsr   r   
<listcomp>>   r   z0CLEVRClassification.__init__.<locals>.<listcomp>)r
   _splitsuper__init__r   pathlibPathr   _base_folderr   _URLpathstem_data_folder	_download_check_existsRuntimeErrorsortedjoinpathglob_image_filesopenjsonload_labelsr   )	selfr   r   r   r   r   r   filecontent	__class__r    r   r%   "   s"    	(zCLEVRClassification.__init__)r   c                 C   s
   t | jS N)r   r3   r8   r   r   r   __len__B   s    zCLEVRClassification.__len__)idxr   c                 C   sF   | j | }| j| }| |}| jr.| |}| jr>| |}||fS r=   )r3   r7   r   r   r   )r8   r@   r   labelimager   r   r   __getitem__E   s    




zCLEVRClassification.__getitem__c                 C   s   | j  o| j  S r=   )r,   existsis_dirr>   r   r   r   r.   S   s    z!CLEVRClassification._check_existsc                 C   s(   |   rd S t| jt| j| jd d S )N)md5)r.   r	   r)   strr(   _MD5r>   r   r   r   r-   V   s    zCLEVRClassification._downloadc                 C   s   d| j  S )Nzsplit=)r#   r>   r   r   r   
extra_repr\   s    zCLEVRClassification.extra_repr)__name__
__module____qualname____doc__r)   rH   r   r   rG   r&   r'   r   r   boolr   r%   intr?   tuplerC   r.   r-   rI   __classcell__r   r   r;   r   r      s,    r   )r5   r&   typingr   r   r   r   urllib.parser   folderr   utilsr	   r
   Zvisionr   r   r   r   r   r   <module>   s   