<s> """<STR_LIT>""" <EOL> import numpy as np <EOL> from skimage import data <EOL> import matplotlib . pyplot as plt <EOL> camera = data . camera ( ) <EOL> camera [ : <NUM_LIT:10> ] = <NUM_LIT:0> <EOL> mask = camera < <NUM_LIT> <EOL> camera [ mask ] = <NUM_LIT:255> <EOL> inds_x = np . arange ( len ( camera ) ) <EOL> inds_y = ( <NUM_LIT:4> * inds_x ) % len ( camera ) <EOL> camera [ inds_x , inds_y ] = <NUM_LIT:0> <EOL> l_x , l_y = camera . shape [ <NUM_LIT:0> ] , camera . shape [ <NUM_LIT:1> ] <EOL> X , Y = np . ogrid [ : l_x , : l_y ] <EOL> outer_disk_mask = ( X - l_x / <NUM_LIT:2> ) ** <NUM_LIT:2> + ( Y - l_y / <NUM_LIT:2> ) ** <NUM_LIT:2> > ( l_x / <NUM_LIT:2> ) ** <NUM_LIT:2> <EOL> camera [ outer_disk_mask ] = <NUM_LIT:0> <EOL> plt . figure ( figsize = ( <NUM_LIT:4> , <NUM_LIT:4> ) ) <EOL> plt . imshow ( camera , cmap = '<STR_LIT>' , interpolation = '<STR_LIT>' ) <EOL> plt . axis ( '<STR_LIT>' ) <EOL> plt . show ( ) </s>
