10 Python One-Liners That Will Blow Your Mind

 

1 Reverse a string

text="Python"
print(text[::-1])

#source code --> clcoding.com 

Output:

nohtyP


2 Swap two vairables without a temp variable

a,b=5,20
a,b=b,a
print(a,b)

#source code --> clcoding.com 

Output:
20 5

3. check the string is palindrome

word="madam"
print(word==word[: :-1])

#source code --> clcoding.com 

Output:
True

4. Count Frequency of each element in a list

from collections import Counter
print(Counter(['a','b','c','b','a']))

#source code --> clcoding.com 
Output:
Counter({'a': 2, 'b': 2, 'c': 1})

5. Get all even numbers from a list

nums=[1,2,3,4,5,6,7,8]
print([n for n in nums if n%2==0])

#source code --> clcoding.com 
Output:
[2, 4, 6, 8]


6. Flatten a nested list

nested=[[1,2],[3,4],[5,6]]
print([x for sub in nested for x in sub])

#source code --> clcoding.com 
Output:
[1, 2, 3, 4, 5, 6]

7. Find the factorial of a number

import math
print(math.factorial(5))

#source code --> clcoding.com 
Output:
120

8. Find common elements between two list

a=[1,2,4,5,4]
b=[3,4,5,1,2]
print(list(set(a)& set(b)))

#source code --> clcoding.com 
Output:
[1, 2, 4, 5]

10. one liner FizzBuzz

print(['Fizz'*(i%3==0)+'Buzz'*(i%5==0) or i for i in range(1,16)])

#source code --> clcoding.com 
Output:
[1, 2, 'Fizz', 4, 'Buzz', 'Fizz', 7, 8, 'Fizz', 'Buzz', 11, 'Fizz', 13, 14, 'FizzBuzz']