# A fucntion that checks the length of each word in a list and returns a new list depending on the condition
def right_words(word): #define the function
    return len(word)==3 #state a condition which must be True for any of the element in the list

words = ['cat', 'dog','bean','ace', 'heart'] # assign list to a variable

#use the filter function to apply the function defined above to the list
#and then convert it to a list
print(list(filter(right_words,words)))
def right_words(word):
    return len(word)==5
words = ['cat', 'dog','bean','ace', 'heart']

print(list(filter(right_words,words)))

def right_words(word):
    return len(word)==4
words = []
print(list(filter(right_words,words)))