#collections.py

colors = ['red', 'green', 'blue']
print "A list prints in a string format: {0}".format(colors)
print "Print the second element in the list: {0}".format(colors[1])
colors[1] = 'yellow'
print "Change the second element in the list to {0[1]}: {0}".format(colors)

teams = ('marlins', 'dolphins', 'heat')
print "A tuple prints in a string format: {0}".format(teams)
print "Print the second element in the list: {0[1]}".format(teams)
try:
    team[1] = 'panthers'
    print "Change the second element in the list to {0[1]}: {0}".format(teams)
except:
    print "Error: cannot modify a tuple"

person = {'age': 23, 'major': 'CS', 'gpa': 3.7} 
print "A dictionary prints in a string format: {0}".format(person)
print "Print the major from the dictionary: {0[major]}".format(person)
person['major'] = 'IT'
print "Change the major in the dictionary to {0[major]}: {0}".format(person)