emptylist = []
hobbies = ['running', 'baking', 'blogging']

len(hobbies)

hobbies[0]
list(hobbies[0])

a = [5, 10, 15, 20]
b = [26, 30]
a + b
a * 3

hobbies[0:2]
hobbies[:]

hobbies[0] = "skiing"

del a[1]
print a

'blogging' in hobbies

a = [5, 10, 15, 20]
b = a
print b is a
b[0] = 20
print "a:", a
print "b:", b

for elem in hobbies: 
    print elem

for i in range(len(a)):
    a[i] = a[i] * 2
    print a[i]

a = [5, 10, 15, 20]
b = [i**2 for i in a]
c = [i**2 for i in a if i != 10]

print "a: ", a
print "b: ", b
print "c: ", c

a = [5, 10]
a.append(35)
a.insert(2, 22)
a.extend(b)
a.sort()
k = a.pop(0)

a.index(10)

print hobbies

hob2 = "/".join(hobbies)
print hob2

s = "Boston	is\n a\t beautiful\t city"
print s.split()
print " ".join(s.split())

a = a.sort()
print a