look for item in a list and count

colours =['white', 'white', 'green', 'purple', 'black', 'white', 'white',
'black', 'blue',     'purple', 'yellow', 'green', 'white',
'blue', 'blue', 'green', 'green', 'red', 'black', 'yellow',
'white', 'blue', 'orange', 'green', 'blue', 'green', 'white',
'red', 'yellow', 'red', 'green', 'white', 'red', 'white',
'yellow', 'orange', 'red', 'black', 'green', 'orange', 'purple',
'blue', 'red', 'red', 'blue', 'purple', 'yellow', 'yellow', 'red',
'yellow']

count = 0

for item in colours:
    if item == "blue":
        count += 1

print(count)