''' Purpose: introduce summing accumulation
'''

# USE THIS FOR BIG_PRODUCTION.PY (the homework)

# get a list of numbers
reply   = input( 'Enter a list of numbers: ' ) # Example: reply is '1 2 3'
slist   = reply.split() # Example: slist is now ['1','2','3']

print()

# ACCUMULATE LIST OF INTEGER VERSIONS OF STRINGS IN SLIST AND STORE IN NLIST
# slist (string list) nlist (number list)

print( 'slist is', slist )
# convert numeric text into numbers one by one
nlist = []  # initialize holder to prepare for adding elements - accumulator!

for s in slist :
    print( 'Loop variable:', s )
    nbr = int( s )  # Convert the strings in slist to integers
    nlist.append( nbr ) # Add each converted string in nlist (list of integers)
    print( 'nlist is', nlist )
    print()

# Keep in mind for the homework you don't want the print statements in the for loop ^
# That's just to show you all how this works! (just for demonstration)

# NUMBER ACCUMULATION
# by accumulation get the sum of the numbers
total = 0 # number accumulators where we add / subtract are initialized to 0
          # number accumulations where we muliply/divide are initialized to 1 (*cough* big_production)

for nbr in nlist :
    print( 'Loop variable:', nbr )
    total = total + nbr
    print( 'total so far:', total )
    print()

# print summation
print( "sum(", nlist, "):", total )

# Don't name your variables max, sum, min, etc. because those are keywords for built in functions.
# If you do name your variables those keywords, you lose the functionality when you try to use them
# as functions!
# Ex.
# max = 2
# x = max([1,2,3])
# This messes up the max function ^ Don't do that!
# Name it something else!

# COMMENTING OUT MULTIPLE LINES OF CODE AT ONCE:
# To commment out multiple lines of code at once:
#     Single comment can be commented out using #
#     Highlight all the lines Cntl / on PC and Windows
#     Command / on Macs