PYTHON

python filter

number_list = range(-5, 5)
less_than_zero = list(filter(lambda x: x < 0, number_list))
print(less_than_zero)

# Output: [-5, -4, -3, -2, -1]

filter in python

# function filter name ==/ 'omar', 'omer', 'osama', 'ahmed', 'mahmuod', 'abdelrhman'
# and we need just name's start with 'o'

def name(n):

    return n.startswith("o")


names_list = ['omar', 'omer', 'osama', 'ahmed', 'mahmuod', 'abdelrhman']

x = filter(name, names_list)

for l in x:

    print(l)

print("#" * 100)

# function filter number ==/ 1, 20 , 38 , 550 , 3 and we need the numbers bigger than 2


def num(number):

    if number > 2.5:
        return number


num_list = [1, 20, 38, 550, 3]


my_num = filter(num, num_list)

print(list(filter(num, num_list))) # Without Loop.

for n in my_num: # With Loop.

    print(n)

print("#" * 100)

# function filter name with lambda :-

n = ['omar', 'omer', 'osama', 'ahmed', 'mahmuod', 'abdelrhman']

for p in filter(lambda name: name.startswith("a"), n):

    print(p)

print("#" * 100)

# function filter number with lambda :-

num_list = [1, 20, 38, 550, 3]

for N in filter(lambda num: num > 2.4, num_list):

    print(N)

python filter

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

filter function in python

nums1 = [2,3,5,6,76,4,3,2]

def bada(num):
    return num>4 # bada(2) o/p: False, so wont return.. else anything above > value returns true hence filter function shows result  

filters = list(filter(bada, nums1))
print(filters)
 
(or) 
 
bads = list(filter(lambda x: x>4, nums1))
print(bads)

filter function in python

# filter is just filters things

my_list = [1, 2, 3, 4, 5, 6, 7]


def only_odd(item):
    return item % 2 == 1	# checks if it is odd or even


print(list(filter(only_odd, my_list)))

python filter

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

filter in python

"""filter() is a higher-order built-in function that takes a function and iterable as 
inputs and returns an iterator with the elements from the iterable for which the function 
returns True"""
"""The code below uses filter() to get the names in cities that are fewer than 10 
characters long to create the list short_cities"""

cities = ["New York City", "Los Angeles", "Chicago", "Mountain View", "Denver", "Boston"]

def is_short(name):
    return len(name) < 10

short_cities = list(filter(is_short, cities))
print(short_cities)

>>>['Chicago', 'Denver', 'Boston']

filtrar en python/how to filter in python

            method  number  orbital_period   mass  distance  year
0  Radial Velocity       1          269.30   7.10     77.40  2006
2  Radial Velocity       1          763.00   2.60     19.84  2011
3  Radial Velocity       1          326.03  19.40    110.62  2007
6  Radial Velocity       1         1773.40   4.64     18.15  2002
7  Radial Velocity       1          798.50    NaN     21.41  1996