accumulate2.py

from itertools import accumulate

data = [-1, 2, 5, 7, -20, 9, 12, 9, 16, 4]

print(list(accumulate(data, min)))
#Prints the running minimum of the data
#OUTPUT
'''
[-1, -1, -1, -1, -20, -20, -20, -20, -20, -20]
'''
print(list(accumulate(data, max)))
#Prints the running maximum of the data
#OUTPUT
'''
[-1, 2, 5, 7, 7, 9, 12, 12, 16, 16]
'''
my_func = lambda a,b: (a + b) * 2

print(list(accumulate(data, my_func)))
#Prints the output calculated by the my_func
#OUTPUT
'''
[-1, 2, 14, 42, 44, 106, 236, 490, 1012, 2032]
'''