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Python: Split an iterable and generate iterables specified number of times

Python Itertools: Exercise-9 with Solution

Write a Python program to split an iterable and generate iterables specified number of times.

Sample Solution:

Python Code:

import itertools as it
def tee_data(iter, n):
    return it.tee(iter, n)
#List
result = tee_data(['A','B','C','D'], 5)
print("Generate iterables specified number of times:")
for i in result:
    print(list(i))

#String
result = tee_data("Python itertools", 4)
print("\nGenerate iterables specified number of times:")
for i in result:
    print(list(i))

Sample Output:

Generate iterables specified number of times:
['A', 'B', 'C', 'D']
['A', 'B', 'C', 'D']
['A', 'B', 'C', 'D']
['A', 'B', 'C', 'D']
['A', 'B', 'C', 'D']

Generate iterables specified number of times:
['P', 'y', 't', 'h', 'o', 'n', ' ', 'i', 't', 'e', 'r', 't', 'o', 'o', 'l', 's']
['P', 'y', 't', 'h', 'o', 'n', ' ', 'i', 't', 'e', 'r', 't', 'o', 'o', 'l', 's']
['P', 'y', 't', 'h', 'o', 'n', ' ', 'i', 't', 'e', 'r', 't', 'o', 'o', 'l', 's']
['P', 'y', 't', 'h', 'o', 'n', ' ', 'i', 't', 'e', 'r', 't', 'o', 'o', 'l', 's']

Python Code Editor:


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Previous: Write a Python program to create an iterator that returns consecutive keys and groups from an iterable.
Next: Write a Python program to create an iterator to get specified number of permutations of elements.

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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