Error in currency exchange

We received the following error when we ran your code:

  ImportError while importing test module ''.
Hint: make sure your test modules.packages have valid Python names.
Traceback: in import_module
    return _bootstrap._gcd_import(name[level:], package, level) in <module>
    from exchange import (
E   ImportError: cannot import name 'get_change' from 'exchange' (

That means you need to implement the get_change function. Did you delete all the initial code you were given?

yes, i deleted all the initial code, retrieved, finnally figured out. thank you.