import cv2 as cv
for item in dir(cv):
if item.startswith('IMREAD'):
print(item, ':', eval('{}.{}'.format('cv', item)))
Output:
IMREAD_ANYCOLOR : 4 IMREAD_ANYDEPTH : 2 IMREAD_COLOR : 1 IMREAD_GRAYSCALE : 0 IMREAD_IGNORE_ORIENTATION : 128 IMREAD_LOAD_GDAL : 8 IMREAD_REDUCED_COLOR_2 : 17 IMREAD_REDUCED_COLOR_4 : 33 IMREAD_REDUCED_COLOR_8 : 65 IMREAD_REDUCED_GRAYSCALE_2 : 16 IMREAD_REDUCED_GRAYSCALE_4 : 32 IMREAD_REDUCED_GRAYSCALE_8 : 64 IMREAD_UNCHANGED : -1
