import ytthumb

video = 'https://youtu.be/rokGy0huYEA'  # link/id

# Basic Usage
print(ytthumb.thumbnail(video))
# => returns thumbnail link

# Advanced Usage
thumbnail = ytthumb.thumbnail(
    video=video,
    quality="sd"  # Not required
)
print(thumbnail)
# returns thumbnail link

import ytthumb

print(ytthumb.qualities())  # json=True (default)
# returns list of qualities with full form as json

print(ytthumb.qualities(json=False))
# returns list of qualities as list

import ytthumb

ytthumb.download_thumbnail(
    video='https://youtu.be/rokGy0huYEA',
    name='thumbnail.jpg',  # Not required
    quality='sd'  # Not required
)
# Downloaded thumbnail will be in the 'thumbnail.jpg' file in 'thumbnails' directory