Python Filter

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Python Filter

Filter Overview

The filter() method filters the given sequence with the help of a function that tests each element in the sequence to be true or not

Code :

ages = [5, 12, 17, 28, 24, 32]
 
def myFunc(x):
  if x > 18:
    return False
  else:
    return True
 
 
adults = filter(myFunc, ages) 
#print(adults)
print(list(adults))
#for x in adults:
#  print(x)

Filter Overview

The filter() method filters the given sequence with the help of a function that tests each element in the sequence to be true or not

Code :

# a list contains both even and odd numbers.  
seq = [0, 1, 2, 3, 5, 8, 13] 
  
# result contains odd numbers of the list 
#result = filter(lambda x: x % 2, seq) 
#print(list(result)) 
  
# result contains even numbers of the list 
result = filter(lambda x: x % 2 == 0, seq) 
print(list(result))

Python Filter Example1

The filter function in Python is a built-in function used to construct an iterator from elements of an iterable (like lists, tuples, or strings) for which a function returns true. It is commonly used for filtering elements based on some criteria.

Code :

ages = [5, 12, 17, 28, 24, 32]
 
def myFunc(x):
  if x > 18:
    return False
  else:
    return True
 
 
adults = filter(myFunc, ages) 
#print(adults)
print(list(adults))
#for x in adults:
#  print(x)

Python Filter Example2

Code :

# a list contains both even and odd numbers.  
seq = [0, 1, 2, 3, 5, 8, 13] 
  
# result contains odd numbers of the list 
#result = filter(lambda x: x % 2, seq) 
#print(list(result)) 
  
# result contains even numbers of the list 
result = filter(lambda x: x % 2 == 0, seq) 
print(list(result))