a
    PSic                     @   s&  d dl Z d dlZd dlZd dlmZ d dlmZmZmZm	Z	m
Z
mZ d dlZddlmZ ddlmZmZmZ ddd	d
ZdZG dd deZdee
e eeeef ee f dddZeeeddddZdee
e ddddZd ee
e eddddZd!ee
e e
ee  eddddZdS )"    N)contextmanager)AnyDictListIteratorOptionalTuple   )ImageFolder)check_integrityextract_archiveverify_str_arg)zILSVRC2012_img_train.tarZ 1d675b47d978889d74fa0da5fadfb00e)zILSVRC2012_img_val.tarZ 29b22e2961454d5413ddabcf34fc5622)zILSVRC2012_devkit_t12.tar.gzZ fa75699e90414af021442c21a62c3abf)trainvaldevkitzmeta.binc                       s\   e Zd ZdZdeeedd fddZdddd	Zeedd
dZ	edddZ
  ZS )ImageNeta  `ImageNet <http://image-net.org/>`_ 2012 Classification Dataset.

    Args:
        root (string): Root directory of the ImageNet Dataset.
        split (string, optional): The dataset split, supports ``train``, or ``val``.
        transform (callable, optional): A function/transform that  takes in an PIL image
            and returns a transformed version. E.g, ``transforms.RandomCrop``
        target_transform (callable, optional): A function/transform that takes in the
            target and transforms it.
        loader (callable, optional): A function to load an image given its path.

     Attributes:
        classes (list): List of the class name tuples.
        class_to_idx (dict): Dict with items (class_name, class_index).
        wnids (list): List of the WordNet IDs.
        wnid_to_idx (dict): Dict with items (wordnet_id, class_index).
        imgs (list): List of (image path, class_index) tuples
        targets (list): The class_index value for each image in the dataset
    r   N)rootsplitkwargsreturnc                    s   t j| }| _t|dd| _|   t| jd  t j	| j
fi | || _| j| _| j| _ fdd| jD | _dd t| jD | _d S )Nr   )r   r   r   c                    s   g | ]} | qS  r   ).0wnidwnid_to_classesr   Y/var/www/html/django/DPS/env/lib/python3.9/site-packages/torchvision/datasets/imagenet.py
<listcomp>6       z%ImageNet.__init__.<locals>.<listcomp>c                 S   s    i | ]\}}|D ]
}||qqS r   r   )r   idxclssclsr   r   r   
<dictcomp>7   r   z%ImageNet.__init__.<locals>.<dictcomp>)ospath
expanduserr   r   r   parse_archivesload_meta_filesuper__init__split_folderclasseswnidsclass_to_idxZwnid_to_idx	enumerate)selfr   r   r   	__class__r   r   r(   *   s    zImageNet.__init__r   c                 C   sZ   t tj| jtst| j tj| jsV| j	dkrBt
| j n| j	dkrVt| j d S )Nr   r   )r   r"   r#   joinr   	META_FILEparse_devkit_archiveisdirr)   r   parse_train_archiveparse_val_archiver.   r   r   r   r%   9   s    


zImageNet.parse_archivesc                 C   s   t j| j| jS N)r"   r#   r2   r   r   r8   r   r   r   r)   C   s    zImageNet.split_folderc                 C   s   dj f i | jS )NzSplit: {split})format__dict__r8   r   r   r   
extra_reprG   s    zImageNet.extra_repr)r   )__name__
__module____qualname____doc__strr   r(   r%   propertyr)   r<   __classcell__r   r   r/   r   r      s   
r   )r   filer   c                 C   sD   |d u rt }tj| |}t|r,t|S d}t||| d S )NzThe meta file {} is not present in the root directory or is corrupted. This file is automatically created by the ImageNet dataset.)	r3   r"   r#   r2   r   torchloadRuntimeErrorr:   )r   rD   msgr   r   r   r&   K   s    
r&   )r   rD   md5r   c                 C   s,   t tj| ||s(d}t||| d S )Nz{The archive {} is not present in the root directory or is corrupted. You need to download it externally and place it in {}.)r   r"   r#   r2   rG   r:   )r   rD   rI   rH   r   r   r   _verify_archiveZ   s    rJ   c                    s$  ddl m tttttf ttttdf f f dfdd}ttt ddd}ttt d	d
d}t	d }|du r|d }|d }t
| || | r}ttj| || tj|d}||\ }	||}
 fdd|
D }t|	|ftj| t W d   n1 s0    Y  dS )a5  Parse the devkit archive of the ImageNet2012 classification dataset and save
    the meta information in a binary file.

    Args:
        root (str): Root directory containing the devkit archive
        file (str, optional): Name of devkit archive. Defaults to
            'ILSVRC2012_devkit_t12.tar.gz'
    r   N.)devkit_rootr   c                    s   t j| dd}j|ddd  tt  d } fddt|D  tt  d d	 \}}}d
d |D }dd t||D }dd t||D }||fS )Ndatazmeta.matT)
squeeze_meZsynsets   c                    s    g | ]\}}|d kr | qS )r   r   )r   r   num_childrenmetar   r   r   r   r   z@parse_devkit_archive.<locals>.parse_meta_mat.<locals>.<listcomp>   c                 S   s   g | ]}t |d qS )z, )tupler   )r   r   r   r   r   r   t   r   c                 S   s   i | ]\}}||qS r   r   )r   r   r   r   r   r   r!   u   r   z@parse_devkit_archive.<locals>.parse_meta_mat.<locals>.<dictcomp>c                 S   s   i | ]\}}||qS r   r   )r   r   r   r   r   r   r!   v   r   )r"   r#   r2   loadmatlistzipr-   )rK   ZmetafileZnums_childrenZidcsr+   r*   idx_to_wnidr   )siorP   r   parse_meta_matn   s    z,parse_devkit_archive.<locals>.parse_meta_matc                 S   sN   t j| dd}t|}| }W d    n1 s60    Y  dd |D S )NrL   z&ILSVRC2012_validation_ground_truth.txtc                 S   s   g | ]}t |qS r   )int)r   Zval_idxr   r   r   r   }   r   zKparse_devkit_archive.<locals>.parse_val_groundtruth_txt.<locals>.<listcomp>)r"   r#   r2   open	readlines)rK   rD   Ztxtfhval_idcsr   r   r   parse_val_groundtruth_txty   s    
&z7parse_devkit_archive.<locals>.parse_val_groundtruth_txtr1   c               	   s   s.   t  } z| V  W t|  nt|  0 d S r9   )tempfilemkdtempshutilrmtree)tmp_dirr   r   r   get_tmp_dir   s    z)parse_devkit_archive.<locals>.get_tmp_dirr   r	   ZILSVRC2012_devkit_t12c                    s   g | ]} | qS r   r   )r   r   )rW   r   r   r      r   z(parse_devkit_archive.<locals>.<listcomp>)scipy.ioiorA   r   r   rZ   r   r   r   ARCHIVE_METArJ   r   r"   r#   r2   rE   saver3   )r   rD   rY   r^   rd   archive_metarI   rc   rK   r   r]   Z	val_wnidsr   )rW   rX   r   r4   c   s"    	4r4   r   )r   rD   folderr   c                    s   t d }|du r|d }|d }t| || tj| | ttj| |   fddt D }|D ]}t|tj|d dd qjdS )	a  Parse the train images archive of the ImageNet2012 classification dataset and
    prepare it for usage with the ImageNet dataset.

    Args:
        root (str): Root directory containing the train images archive
        file (str, optional): Name of train images archive. Defaults to
            'ILSVRC2012_img_train.tar'
        folder (str, optional): Optional name for train images folder. Defaults to
            'train'
    r   Nr   r	   c                    s   g | ]}t j |qS r   r"   r#   r2   )r   archiveZ
train_rootr   r   r      r   z'parse_train_archive.<locals>.<listcomp>T)remove_finished)rg   rJ   r"   r#   r2   r   listdirsplitext)r   rD   rj   ri   rI   Zarchivesrl   r   rm   r   r6      s    r6   r   )r   rD   r+   rj   r   c           	         s   t d }|du r|d }|d }|du r4t| d }t| || tj| | ttj| |  t fddt D }t	|D ]}t
tj | qt||D ](\}}t|tj |tj| qdS )af  Parse the validation images archive of the ImageNet2012 classification dataset
    and prepare it for usage with the ImageNet dataset.

    Args:
        root (str): Root directory containing the validation images archive
        file (str, optional): Name of validation images archive. Defaults to
            'ILSVRC2012_img_val.tar'
        wnids (list, optional): List of WordNet IDs of the validation images. If None
            is given, the IDs are loaded from the meta file in the root directory
        folder (str, optional): Optional name for validation images folder. Defaults to
            'val'
    r   Nr   r	   c                 3   s   | ]}t j |V  qd S r9   rk   )r   imageZval_rootr   r   	<genexpr>   r   z$parse_val_archive.<locals>.<genexpr>)rg   r&   rJ   r"   r#   r2   r   sortedro   setmkdirrV   ra   movebasename)	r   rD   r+   rj   ri   rI   imagesr   Zimg_filer   rr   r   r7      s    r7   )N)N)Nr   )NNr   )r"   ra   r_   
contextlibr   typingr   r   r   r   r   r   rE   rj   r
   utilsr   r   r   rg   r3   r   rA   r&   rJ   r4   r6   r7   r   r   r   r   <module>   s,    6,	6 