List comprehension



In [1]:

    
lst1 = [x for x in range(10)]
lst1









    Out[1]:





[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]



In [2]:

    
lst2 = [chr(x) for x in range(97,123) if x%2==0]
lst2









    Out[2]:





['b', 'd', 'f', 'h', 'j', 'l', 'n', 'p', 'r', 't', 'v', 'x', 'z']



In [3]:

    
[y for x in range(3) for y in range(x) if y%2==0]









    Out[3]:





[0, 0]

Lambda function



In [4]:

    
# square
f1 = lambda v1: v1 ** 2
f1(5)









    Out[4]:





25



In [5]:

    
# power with two inputs
f2 = lambda v1, v2: v1 ** v2
f2(5, 2)









    Out[5]:





25



In [6]:

    
# checking even numbers one by one
f3 = lambda v1: [v1 if v1%2==0 else 0]
print(f3(9))
print(f3(8))









    



[0]
[8]



In [12]:

    
# Checking if a number is present in list
f4 = lambda v1, v2: [545 for i in v2 if i == v1]
f4(8,[9,8])









    Out[12]:





[545]



In [8]:

    
# Finding square of every value
f5 = lambda v1: v1**2
list(map(f5,[2,5]))









    Out[8]:





[4, 25]



In [13]:

    
# finding even numbers
f6 = lambda v1: v1%2
list(filter(f6,[2,5,6]))









    Out[13]:





[5]



In [10]:

    
# Finding the greatest number
from functools import reduce
f7 = lambda v1, v2: v1 if v1>v2 else v2
reduce(f7,[2,5,1,90,48])









    Out[10]:





90



In [11]:

    
reduce(lambda v1, v2: v1 if v1>v2 else v2,[2,5,1,90,48])









    Out[11]:





90