''' Purpose: construct list of n base 2 digits for a user-supplied n
'''

import random # want random values, then we need the random module

# get the number of wanted bits
reply = input( 'How many bits: ' )

n = int( reply )

print()
                                
# create an empty list of bits

bits = []                  # start off with an empty list

# add n random 0/1's to bits
# for each loop, we want to generate a bit, which includes values 0 and 1
# then we want to append this new bit into our list of bits
# n is how many bits we want, got from user
for i in range( 0, n ) :   # i is the iterator

    # each iteration want to add another bit to the list of bits

    # get the next bit

    # strategy 1
    possible_choices = [0, 1]
    bit = random.choice( possible_choices )   # choice() needs a sequence which can be a list or string
                                              # we have a list that includes 0 and 1 --> chooses either int 0 or 1
    # random.choice( 0, 1 ) -> the arguments inside the () are not a sequence
    # choice() will only take a single thing that in itself is a sequence (string or list)

    # strategy 2
    bit = random.randrange( 0, 2 )  # also the same as random.randrange( 2 )
    # randrange() requires individual numbers, not a list nor a string
    # so putting possible_choices into randrange will not work

    # append the bit to the list of bits so far

    bits.append( bit )  

# print bits 
print( bits )