Extract GPS data using python and PIL is failing

Question

This code is from https://www.blog.pythonlibrary.org, which is similar to others, which also fail in the same wayThis is the error code given

    from PIL import Image
    from PIL.ExifTags import TAGS, GPSTAGS   
    filename="screenshot.jpg"
    
    def get_exif(image_file_path):
        exif_table = {}
        image = Image.open(image_file_path)
        info = image.getexif()
        for tag, value in info.items():
            decoded = TAGS.get(tag, tag)
            exif_table[decoded] = value
            print (f'Tag={tag}, Value={value}, decoded= {decoded}')
        print (f'exif table is {exif_table}')
        gps_info = {}
        for key in exif_table['GPSInfo'].keys():
            decode = GPSTAGS.get(key,key)
            gps_info[decode] = exif_table['GPSInfo'][key]
        return gps_info
         
    if __name__ == "__main__":
        exif = get_exif(filename)
        print(exif)

The error message is:

Traceback (most recent call last):

for key in exif_table['GPSInfo'].keys(): AttributeError: 'int' object has no attribute 'keys'

I understand that the value for GPSInfo is itself a key into another part of the file which itself has keys and values regarding the latitude and longitude. In the case of this image file GPSInfo is 90. I assume that is a integer and that is what's causing the problem, but as the sample code appears in multiple places on the inter web, I can't see what the real problem is

I added some print lines right before the gps_info={} statement. This shows exactly what the line for key in exif_table['GPSInfo'].keys(): is dealing with

Tag=34853, Value=90, decoded= GPSInfo Tag=296, Value=2, decoded= ResolutionUnit Tag=531, Value=1, decoded= YCbCrPositioning'Tag=282, Value=96.0, decoded= XResolution Tag=283, Value=96.0, decoded= YResolution exif table is {'GPSInfo': 90, 'ResolutionUnit': 2, 'YCbCrPositioning': 1, 'XResolution': 96.0, 'YResolution': 96.0}

The Tag 34853 correctly equates to GPSInfo. The value of GPSInfo in this file is 90.

I understand that at location 90 of the file, one would expect to find a string of values that represent key:value data for the GPS coordinates, hence the "for key in exif_table ['GPSInfo'].keys():"statement. I assume it fails because the value of exif_table["GPSInfo"] is 90 and seen as an integer, not a dictionary. It looks like a step is missing, but as its widely published code, I assume it must work and that it's me that has something wrong

Answer 1

Reading something similar and it can be worked around by using _getexit() instead of getexif() https://github.com/python-pillow/Pillow/issues/5863