python ordered code example

Example 1: sorted vs sort python

# The sort() function will modify the list it is called on. 
# The sorted() function will create a new list 
# containing a sorted version of the list it is given.

list = [4,8,2,1]
list.sort()
#--> list = [1,2,4,8] now

list = [4,8,2,1]
new_list = list.sorted()
#--> list = [4,8,2,1], but new_list = [1,2,4,8]

Example 2: sorted list python

sorted(iterable, key=None, reverse=False)

type(sorted(iterable, key=None, reverse=False)) = list

Example 3: python collections to dictionary

list = ["a","c","c","a","b","a","a","b","c"]
cnt = Counter(list)
od = OrderedDict(cnt.most_common())
for key, value in od.items():
    print(key, value)