mojalista = [2.4, "pies", ["kot", 4]]
print (len(mojalista))

mojalista = ['pies' , 'piesek' ,1, 4 ,'pies', 'kot', 'pies']
print (mojalista.count('pies'))

mojalista = ['pies' , 'piesek' ,1, 4 ,'pies', 'kot', 'pies']
x = mojalista.count('kos')
print(x)

mojalista = ['pies' , 'piesek' ,1, 4 ,'pies', 'kot', 'pies']
print (mojalista.index('pies'))

mojalista = ['pies' , 'piesek' ,1, 4 ,'pies', 'kot', 'pies']
print (mojalista.index(1))

mojalista = [4,2,6,8,1]
x = mojalista.sort()
print(x)

mojalista = ['pies' , 'piesek' ,1, 4 ,'pies', 'kot', 'pies']
print(mojalista.index('kos'))

mojalista = [5, 6, 1, 7, 2, 9]
mojalista.sort()
print (mojalista)

mojalista = ["kot", "pies", "mysz", "chomik"]
mojalista.sort()
print (mojalista)

mojalista = ['pies', 0, 'kot', 7]
mojalista.extend([4,5,'mysz'])
print (mojalista)

mojalista = ['pies',9]
mojalista.extend('kot')
print (mojalista)

mojalista = ['mysz' , 7 , 'pies' ,2]
mojalista.append('kot')
print(mojalista)

mojalista = ['kot', 'pies', 'mysz', 3, 2]
mojalista.append (['chomik', 3])
print(mojalista)

mojalista = [1, 'pies', 3]
mojalista.insert(2, 'kot')
print(mojalista)

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
mojalista.remove(4)
print (mojalista)

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
mojalista.pop()
print (mojalista)

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
del mojalista[0]
print (mojalista)

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
print (mojalista.extend([1,2]))

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
print (mojalista.append('chomik'))

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
print(mojalista.insert(2,"chomik"))

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
print (mojalista.remove('mysz'))

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
print (mojalista.pop(0))

mojalista = ['pies', 'mysz', 4, 0, 'kot', 7]
print (mojalista.pop('kot'))

mojalista = []
for x in range(3,15,3):
    mojalista.append(x)
print(mojalista)

x = range(1,10,4)
y = []
for z in x:
    if z % 2:
        y.append(z)
print(y)

mojalista = []
for x in range(5,20):
    if not (x % 3):
        mojalista.append(x)
print(mojalista)