Python: Count the frequency of consecutive duplicate elements in a given list of numbers, use itertools module
Python Itertools: Exercise-31 with Solution
Write a Python program to count the frequency of consecutive duplicate elements in a given list of numbers. Use itertools module.
Sample Solution:
Python Code:
from itertools import groupby
def count_same_pair(nums):
result = [sum(1 for _ in group) for _, group in groupby(nums)]
return result
nums = [1,1,2,2,2,4,4,4,5,5,5,5]
print("Original lists:")
print(nums)
print("\nFrequency of the consecutive duplicate elements:")
print(count_same_pair(nums))
Sample Output:
Original lists: [1, 1, 2, 2, 2, 4, 4, 4, 5, 5, 5, 5] Frequency of the consecutive duplicate elements: [2, 3, 3, 4]
Python Code Editor:
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Previous: Write a Python program to create non-repeated combinations of Cartesian product of four given list of numbers.
Next: Write a Python program to count the frequency of the elements of a given unordered list.
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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
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