Python questions!

Write a function dec_to_bin(n) that takes a non-negative integer n and uses recursion to convert it from decimal to binary constructing and returning a string version of the binary representation of that number. For example:

>>> dec_to_bin(5) '101' >>> dec_to_bin(12) '1100' 

2.

Write a function bin_to_dec(b) that takes a string b that represents a binary number and uses recursion to convert the number from binary to decimal, returning the resulting integer. For example:

>>> bin_to_dec('101') 5 >>> bin_to_dec('1100') 12