Fastest way to count number of occurrences in a Python list

Question

I have a Python list and I want to know what\'s the quickest way to count the number of occurrences of the item, \'1\' in this list. In my actual case, the item

Answer 1

You can convert list in string with elements seperated by space and split it based on number/char to be searched..

Will be clean and fast for large list..

>>>L = [2,1,1,2,1,3]
>>>strL = " ".join(str(x) for x in L)
>>>strL
2 1 1 2 1 3
>>>count=len(strL.split(" 1"))-1
>>>count
3