lambda It is usually used to concise a function in short. add=lambda a,b:a+b result=add(4,5) >>>result 9 #same as below def add(a,b): return a+b >>>add(4,5) 9 1. filter nums=[1,2,3,4,5] >>>print(filter(lambda n:n%2==0,nums)) >>>print(list(filter(lambda n:n%2==0,nums))) [2, 4] print(list(filter(lambda n:len(n)>1,df_list_100))) >>> [['183.203.180.184', '80'], ['95.174.64.70', '80'], ['185.13.223.1..