#!/usr/bin/env python
# coding: utf-8

# # Python itertools
# > Swarm Intelligence from social interaction
# 
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# ## Pre-requisits 

# You can pass functions as variables

# In[27]:


def add_two(x):
    return x+2

def do_something_then_add_three(something_to_do_first, x):
    # first call something_to_do_first with the input, then add 3
    return something_to_do_first(x) + 3

# We pass add_two (note the lack of brackets beside it)
do_something_then_add_three(add_two, 0)


# An iterator is an object representing a stream of data. You can call `next` on an iterator to get the next value.

# In[4]:


from string import ascii_lowercase
ascii_lowercase


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iter(ascii_lowercase)


# In[6]:


alphabet_iterator = iter(ascii_lowercase)
next(alphabet_iterator)


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next(alphabet_iterator)


# In[8]:


def add_underscore(x,y): 
    return f'{x}_{y}'


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import itertools
alphabet_iterator = iter(ascii_lowercase)


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my_list = [1,3,5,6]
list(itertools.islice(my_list, 3))


# Say we want to create a list of tuples with ( position_in_alphabet, letter ) starting at (1, 'a') like

# In[55]:


[(1, 'a'), (2, 'b'), (3, 'c')]


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alphabet_tuples = []
for i in range(len(ascii_lowercase)):
    alphabet_tuples.append((i+1, ascii_lowercase[i]))  
alphabet_tuples


# In[58]:


list(zip(count(start=1), ascii_lowercase))


# In[3]:


import IPython.display as ipd
import numpy as np
import itertools


# In[14]:


import itertools

def ascii_wav(times=3):
    wave = "°º¤ø,¸¸,ø¤º°`"
    return ''.join(itertools.repeat(wave, times))

ascii_wav()


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