''' Purpose: contains some code snippets from the list epistle
'''

import math
import pause

stuff = []  # makes stuff a list with no elements.

print( stuff )

pause.enter_when_ready()

stuff = [ 'abc', 1112, math.pi ] # initializes stuff to be a three-element list

print( 'stuff =', stuff )

pause.enter_when_ready()

#he in and not in operations can be used to determine whether a value is or
# is not an element of a list. 

x = 1112

b1 = (x in stuff )     # sets b1 to be True or False depending whether x is an element of stuff
b2 = (x not in stuff ) # sets b2 to be True or False depending whether x is not an element of stuff.

print( 'x  =', x )
print( 'b1 =', b1 )
print( 'b2 =', b2 )

pause.enter_when_ready()

stuff = [ 3, 1, 4, 1, 5, 1 ]

print( 'stuff =', stuff )

largest  = max( stuff ) # sets largest  to the maximum a value in stuff.
smallest = min( stuff ) # sets smallest to the minimuma value in stuff.


print( 'largest  =', largest  )
print( 'smallest =', smallest )

pause.enter_when_ready()

# Unlike strings whose character sequences are immutable once created, lists are mutable.
#  the values of individual elements can change, and elements can be deleted, inserted
#  or added.

v = 9

stuff.append( v ) # adds v to the end of list stuff.

print( 'stuff =', stuff )

pause.enter_when_ready()

x = 2

stuff[ x ] = v # sets the xth element of stuff to have value v

print( 'stuff =', stuff )