python helpers

# get max min of list
max(list)
min(list)

# sort a list
list.sort()
sorted(list)

# sort a list by a specific value
sorted(list, key = lambda x : x[2])

# sort a dictionary by a specific value
sorted(dict.items(), key = lambda (x,y) : y["date"])
sorted(dict.items(), key = lambda (x,y) : y["date"], reverse=True) # to return the reverse value

# get the even number from a list
filter(lambda x : x % 2 == 0, list)

# creates a dictionary with the number of times an item appears in a list i.e {'1': 1, '3': 2, '2': 1}
dict([i, myList.count(i)] for i in myList)

# concatenate sublists into a main list
concat_list = [j for i in myList for j in i]