Python: Generate 256-Color Gradient Chart

gradient_chart_256.py

#!/usr/bin/env python
'''Generate gradient chart.'''


N = 16

def gen_gradient():
    '''Generate gradient.'''
    global N
    f_str = f''
    for i in range(0, 6):
        f_str += f'\x1b[48;5;{N}m     {N}     '
        N += 1
    f_str += '\x1b[0m'
    return f_str

def generate_chart():
    '''Generate gradient chart.'''
    global N
    for i in range(0, 36):
        print(gen_gradient())


if __name__ == '__main__':
    generate_chart()