# Q1

year_list = [1994, 1995, 1996, 1997, 1998]

# Q2

third_year = year_list[3]

# Q3

max_year = max(year_list)

# Q4

things = ['mozzarella', 'cinderella', 'salmonella']

# Q5

things[1].capitalize()

print(things)

# Q6

things[0].upper()

print(things)

# Q7

del things[-1]

print(things)

# Q8

surprise = ['Groucho', 'Chico', 'Harpo']

surprise[-1] = surprise[-1].lower()

surprise[-1] = surprise[-1][::-1]

surprise[-1] = surprise[-1].capitalize()

# Q10

e2f = {'dog': 'chien', 'cat': 'chat', 'walrus': 'norse'}

print(e2f)

# Q11

print(e2f['walrus'])

# Q12

f2e = {}

for k, v in e2f.items():

f2e.setdefault(v, k)

print(f2e)

# Q13

print(f2e['chien'])

# Q14

set(e2f.keys())

# Q15

life = {

'animals': {

'cats': ['Henri', 'Grumpy', 'Lucy'],

'octopi': {},

'emus': {}

},

'plants': {},

'others': {}

}

# Q16

print(life.keys())

# Q17

print(life['animals'].keys())

# Q18

print(life['animals']['cats'])