simple python questions

Exercise 8: Sort the dictionary by value using the function 'sorted()' and a lambda function for selecting the key. Test your function on the dictionary: tel = {'sape': 4139, 'guido': 4127, 'jack': 4098}

My code is:

tel = {'sape': 4139, 'guido': 4127, 'jack': 4098} result=list(sorted(lambda tel.items: key=tel.value, tel)) print(result)

which does not work, ask for answer