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I have instructions for a file format which contains .png images as

Each parquet file contains tens of thousands of 137x236 grayscale images.Each row in the parquet files contains an image_id column, and the flattened image

I've opened these using python and can visualise using matplotlib's imshow. Can anyone suggest me any method to save these in a directory as .png using python?

I can not download any other dependencies and packages

I have used 

ima = pandas.read_parquet(path_of_file)
ima.shape
>>(50210, 32333)

ima.head(2)
>>
   image_id      0     1    ...  32330  32331

0  Train_50210  246    253  ...    251    250   
1  Train_50211  250    245  ...    241    244
Deshwal
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