'''
Purpose: quick refresher on Boolean calculations
'''

# determine whether its input pH level is acidic; i.e., less than 7.0

# acidity limit
ACIDIC_THRESHOLD = 7.0     # samples less than threshold are acidic

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

print( )

# determine whether sample is acidic
is_acidic = ( pH < ACIDIC_THRESHOLD )
# variable is_acidic will store a boolean value! (True/False)
    # If ph < 7 True (Acidic)
    # If ph > 7 False (Nonacidic)
# print result
print( is_acidic ) 
# We want to use the comparison in an if statement!

# all done