printing patterns and stars?

[msa969]

I am a newbie to python and using python 3.
I wish to learn patterns and printing e.g stars etc. I want to start basic patterns first
eg.
*
**
***
****

Is there a website or document like pdf that will teach me this and perhaps answers to check against when i go wrong?

[j.crater]

Hello,
I am not familiar with any document (nor did I search, really..). But if you look into "ASCII art" you might find a lot of resources for what you are after.
As far as Python goes, "print" statement will be your best friend in drawing patterns.

[wavic]

Simple example:

In [14]: for i in range(1, 30, 2):
    ...:     print('*' * i)
    ...:     
*
***
*****
*******
*********
***********
*************
***************
*****************
*******************
*********************
***********************
*************************
***************************

In [15]: print('oh, yes! ' * 10)

oh, yes! oh, yes! oh, yes! oh, yes! oh, yes! oh, yes! oh, yes! oh, yes! oh, yes! oh, yes! 

[ichabod801]

numbers = {'***': 128, '** ': 64, '* *': 32, '*  ': 16, ' **': 8, ' * ': 4, '  *': 2, '   ': 1}

def eca(rule, n = 18, start = '*'):
    rule_bin = reversed(bin(rule)[2:])
    last = start
    for generation in range(n):
        print(last)
        last = '  {}  '.format(last)
        next = ''
        for index in range(len(last) - 2):
            if rule & numbers[last[index:index + 3]]:
                next += '*'
            else:
                next += ' '
        last = next

eca(18)

[wavic]

[ichabod801]

import random

numbers = {'***': 128, '** ': 64, '* *': 32, '*  ': 16, ' **': 8, ' * ': 4, '  *': 2, '   ': 1}

def box(rule, n = 23, width = 79):
    last = ''
    for cell in range(width):
        if random.random() < 0.5:
            last += '*'
        else:
            last += ' '
    for generation in range(n):
        print(last)
        last = ' {} '.format(last)
        next = ''
        for index in range(len(last) - 2):
            if rule & numbers[last[index:index + 3]]:
                next += '*'
            else:
                next += ' '
        last = next

box(30)