How to sort with lambda in Python

Question

In Python, I am trying to sort by date with lambda. I can\'t understand my error message. The message is:

() takes exactly 1 argument (2 given         


        

Answer 1

lst = [('candy','30','100'), ('apple','10','200'), ('baby','20','300')]
lst.sort(key=lambda x:x[1])
print(lst)

It will print as following:

[('apple', '10', '200'), ('baby', '20', '300'), ('candy', '30', '100')]