Author: blogTech

ExceptionsErrors detected during execution are called exceptions.Examples:ZeroDivisionErrorThis error is raised when the second argument of a division or modulo operation is zero.>>> a = '1'>>> b = '0'>>> print int(a) /…

 The defaultdict tool is a container in the collections class of Python. It's similar to the usual dictionary (dict) container, but the only difference is that a defaultdict will have a default value if…

A set is an unordered collection of elements without duplicate entries.When printed, iterated or converted into a sequence, its elements will appear in an arbitrary order.Example>>> print set()set([])>>> print set('HackerRank')set(['a', 'c', 'e',…

Polar coordinates are an alternative way of representing Cartesian coordinates or Complex Numbers.A complex number  is completely determined by its real part  and imaginary part .Here,  is the imaginary unit.A polar coordinate () is completely determined by modulus  and…

itertools.permutations(iterable[, r])This tool returns successive  length permutations of elements in an iterable.If  is not specified or is None, then  defaults to the length of the iterable, and all possible full length permutations are generated.Permutations…

 collections.Counter()A counter is a container that stores elements as dictionary keys, and their counts are stored as dictionary values.Sample Code>>> from collections import Counter>>> >>> myList = [1,1,2,3,4,5,3,2,3,4,2,1,2,3]>>> print Counter(myList)Counter({2:…

 Consider the following:A string, , of length  where .An integer, , where  is a factor of .We can split  into  substrings where each subtring, , consists of a contiguous block of  characters in . Then, use each  to create string  such that:The characters…

Kevin and Stuart want to play the 'The Minion Game'.Game RulesBoth players are given the same string, .Both players have to make substrings using the letters of the string .Stuart has to…