#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))