number_list = range(-5, 5)<br /> less_than_zero = list(filter(lambda x: x < 0, number_list))<br /> print(less_than_zero)</p> <p># Output: [-5, -4, -3, -2, -1]<br />

ages = [5, 12, 17, 18, 24, 32]<br /> adults = list(filter(lambda x: x >= 18, ages))</p> <p>print(adults)<br /> # [18, 24, 32]

lst = [1,2,3,4,5,6,7,8,9]<br /> list(filter(lambda x:x%2 == 0, lst))

# function filter name ==/ ‘omar’, ‘omer’, ‘osama’, ‘ahmed’, ‘mahmuod’, ‘abdelrhman’<br /> # and we need just name’s start with ‘o’</p> <p>def name(n):</p> <p> return n.startswith(“o”)</p> <p>names_list = [‘omar’, ‘omer’, ‘osama’, ‘ahmed’, ‘mahmuod’, ‘abdelrhman’]</p> <p>x = filter(name, names_list)</p> <p>for l in x:</p> <p> print(l)</p> <p>print(“#” * 100)</p> <p># function filter number ==/ 1, 20 , 38 , 550 , 3 and we need the numbers bigger than 2</p> <p>def num(number):</p> <p> if number > 2.5:<br /> return number</p> <p>num_list = [1, 20, 38, 550, 3]</p> <p>my_num = filter(num, num_list)</p> <p>print(list(filter(num, num_list))) # Without Loop.</p> <p>for n in my_num: # With Loop.</p> <p> print(n)</p> <p>print(“#” * 100)</p> <p># function filter name with lambda :-</p> <p>n = [‘omar’, ‘omer’, ‘osama’, ‘ahmed’, ‘mahmuod’, ‘abdelrhman’]</p> <p>for p in filter(lambda name: name.startswith(“a”), n):</p> <p> print(p)</p> <p>print(“#” * 100)</p> <p># function filter number with lambda :-</p> <p>num_list = [1, 20, 38, 550, 3]</p> <p>for N in filter(lambda num: num > 2.4, num_list):</p> <p> print(N)<br />

“””filter() is a higher-order built-in function that takes a function and iterable as<br /> inputs and returns an iterator with the elements from the iterable for which the function<br /> returns True”””<br /> “””The code below uses filter() to get the names in cities that are fewer than 10<br /> characters long to create the list short_cities”””</p> <p>cities = [“New York City”, “Los Angeles”, “Chicago”, “Mountain View”, “Denver”, “Boston”]</p> <p>def is_short(name):<br /> return len(name) < 10</p> <p>short_cities = list(filter(is_short, cities))<br /> print(short_cities)</p> <p>>>>[‘Chicago’, ‘Denver’, ‘Boston’]

nums1 = [2,3,5,6,76,4,3,2]</p> <p>def bada(num):<br /> return num>4 # bada(2) o/p: False, so wont return.. else anything above > value returns true hence filter function shows result </p> <p>filters = list(filter(bada, nums1))<br /> print(filters)</p> <p>(or) </p> <p>bads = list(filter(lambda x: x>4, nums1))<br /> print(bads)<br />

ages = [5, 12, 17, 18, 24, 32]<br /> def myFunc(x):<br /> if x < 18:<br /> return False<br /> else:<br /> return True</p> <p>adults = filter(myFunc, ages)<br /> for x in adults:<br /> print(x) # 18 24 32

# filter is just filters things</p> <p>my_list = [1, 2, 3, 4, 5, 6, 7]</p> <p>def only_odd(item):<br /> return item % 2 == 1 # checks if it is odd or even</p> <p>print(list(filter(only_odd, my_list)))<br />

number_list = range(-5, 5)<br /> less_than_zero = list(filter(lambda x: x < 0, number_list))<br /> print(less_than_zero)</p> <p># Output: [-5, -4, -3, -2, -1]<br />

numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]</p> <p>def is_even(num):<br /> if num % 2 == 0:<br /> return True</p> <p>even_numbers = filter(is_even, numbers)</p> <p>print(list(even_numbers))</p> <p># Output<br /> # [2, 4, 6, 8, 10]