Join a list of items with different types as string in Python

I need to join a list of items. Many of the items in the list are integer values returned from a function; i.e.,

myList.append(munfunc()) 

How should I convert the returned result to a string in order to join it with the list?

Do I need to do the following for every integer value:

myList.append(str(myfunc()))

Is there a more Pythonic way to solve casting problems?