Python: Factorial of a number using itertools module
Python Itertools: Exercise-20 with Solution
Write a Python program to find the factorial of a number using the itertools module.
Sample Solution:
Python Code:
import itertools as it
import operator as op
def factorials_nums(n):
result = list(it.accumulate(it.chain([1], range(1, 1 + n)), op.mul))
return result;
print("Factorials of 5 :", factorials_nums(5))
print("Factorials of 9 :", factorials_nums(9))
Sample Output:
Factorials of 5 : [1, 1, 2, 6, 24, 120] Factorials of 9 : [1, 1, 2, 6, 24, 120, 720, 5040, 40320, 362880]
Python Code Editor:
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Previous: Write a Python program which iterates the integers from 1 to a given number and print "Fizz" for multiples of three, print "Buzz" for multiples of five, print "FizzBuzz" for multiples of both three and five using itertools module.
Next: Write a Python program to find the years where 25th of December be a Sunday between 2000 and 2150.
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Python: Tips of the Day
Inverts a dictionary with non-unique hashable values:
Example:
def tips_collect_dictionary(obj): inv_obj = {} for key, value in obj.items(): inv_obj.setdefault(value, list()).append(key) return inv_obj ages = { "Owen": 25, "Jhon": 25, "Pepe": 15, } print(tips_collect_dictionary(ages))
Output:
{25: ['Owen', 'Jhon'], 15: ['Pepe']}
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