'''
Purpose: introduce decision making
'''

# determine chrysanthemum color given an input soil pH level
#       acidic soil produces pink chrysanthemums
#   non-acidic soil produces blue chrysanthemums

# acidity threshold

ACIDIC_THRESHOLD = 7.0     # samples less than threshold are acidic

# get soil pH level of interst
reply = input( 'Enter soil pH level: ' )

pH = float( reply )

print( )

# analyze and report effect on chrysanthemums
# if statements
# allows you to test a logical expression and if the expression evaluates to True
# we do the things indented into the if statement
# if (test):
    # do this
# else: (the if statement wasn't true so we do this)
    # do this

# if acidic print 'pink';  otherwise print 'blue'
if ( pH < ACIDIC_THRESHOLD ):
    # If the test inside the parentheses evaluates to True we jump into the indented block
    color = 'pink'
else:   # pH was not < ACIDIC_THRESHOLD (the if test wasn't True so we jump into this block)
    color = 'blue'

print( 'Soil sample makes chrysanthemums', color )

# all done

# test expression is something that uses a logical/relational operator that will evaluate
# to True / False

# if (test expression):
    # Indented statements are executed if test expression evaluates to True
# else:
    # test expression wasn't true so we jump into this indented block