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Python: Generate the running maximum, minimum value of the elements of an iterable

Python Itertools: Exercise-3 with Solution

Write a Python program to generate the running maximum, minimum value of the elements of an iterable.

Sample Solution:

Python Code:

from itertools import accumulate
def running_max_product(iters):
    return accumulate(iters, max)
#List
result = running_max_product([1,3,2,7,9,8,10,11,12,14,11,12,7])
print("Running maximum value of a list:")
for i in result:
    print(i)
#Tuple
result = running_max_product((1,3,3,7,9,8,10,9,8,14,11,15,7))
print("Running maximum value of a Tuple:")
for i in result:
    print(i)
def running_min_product(iters):
    return accumulate(iters, min)
#List
result = running_min_product([3,2,7,9,8,10,11,12,1,14,11,12,7])
print("Running minimum value of a list:")
for i in result:
    print(i)
#Tuple
result = running_min_product((1,3,3,7,9,8,10,9,8,0,11,15,7))
print("Running minimum value of a Tuple:")
for i in result:
    print(i)

Sample Output:

Running maximum value of a list:
1
3
3
7
9
9
10
11
12
14
14
14
14
Running maximum value of a Tuple:
1
3
3
7
9
9
10
10
10
14
14
15
15
Running minimum value of a list:
3
2
2
2
2
2
2
2
1
1
1
1
1
Running minimum value of a Tuple:
1
1
1
1
1
1
1
1
1
0
0
0
0

Python Code Editor:


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Previous: Write a Python program to create an iterator from several iterables in a sequence and display the type and elements of the new iterator.
Next: Write a Python program to construct an infinite iterator that returns evenly spaced values starting with a specified number and step.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m