''' Purpose: introduce lists
'''

import pause
'''
# get text and convert to list form
reply   = input( 'Enter text: ' )
strings = reply.split() 

print( 'reply   =', reply )
print( 'strings =', strings )
print()

# get text and convert to list form
reply   = input( 'Just hit enter: ' )
print()

strings = reply.split()

print( 'reply   =', reply )
print( 'strings =', strings )

pause.enter_when_ready()

# get text and convert to list form and print words one by one
reply   = input( 'Enter text: ' )
strings = reply.split() 

for s in strings: # s will take on each word in strings
    print(s)

pause.enter_when_ready()

# get numeric text and convert to numbers
reply   = input( 'Enter a list of numbers: ' )
numeric_strings = reply.split()

print( 'reply   =', reply )
print( 'strings =', strings )

pause.enter_when_ready()

total = 0 # accumulator must be initialized before loop

for ns in numeric_strings:
    n = int(ns)
    total = total + n

print( numeric_strings, total )

pause.enter_when_ready()
'''

# get numeric text and convert to numbers
reply   = input( 'Enter a list of numbers: ' )
numeric_strings   = reply.split()

print( 'reply   =', reply )
print( 'numeric_strings   =', numeric_strings)

pause.enter_when_ready() # Don't use this in your own code. Its for teaching purposes

numbers = [] # here the accumulator is not a a number but a list
# We are creating numbers as an empty list so that we can later add things to it

print( 'numbers: ', numbers )

#  parenthesis are used two ways:
# 1: After a function
# 2: also used as a grouping operator (for math)
# Brackets indicate a list


for ns in numeric_strings: # each time we go through the loop we have a different string from the list
    n = int(ns)
    numbers.append(n) # append function adds the element in the parenthesis to the end of a list
    print('n = ', n, 'ns =', ns, 'numbers: ', numbers)

#n.append(12) numbers can't append only lists can

print(numbers)

#total = sum(numbers)

#print( total )