https://www.hackerrank.com/challenges/default-arguments
Problem
In this challenge, the task is to debug the existing code to successfully execute all provided test files.
Python supports a useful concept of default argument values. For each keyword argument of a function, we can assign a default value which is going to be used as the value of said argument if the function is called without it.
Input Format
The input is read by the provided locked code template. In the first line, there is a single integer Q denoting the number of queries. Each of the following Q lines contains a stream_name followed by integer N, and it corresponds to a single test for your function.
Output Format
The output is produced by the provided and locked code template. For each of the queries (stream_name, n), if the stream_name is even then print_from_stream(n) is called. Otherwise, if the stream_name is odd, then print_from_stream(n, OddStream()) is called.
Sample Input 0
3
odd 2
even 3
odd 5
Sample Output 0
1
3
0
2
4
1
3
5
7
9