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Python: Find a string consisting of space-separated characters with given counts

Python Programming Puzzles: Exercise-74 with Solution

Write a Python program to find a string consisting of space-separated characters with given counts.

Input: {'f': 1, 'o': 2}
Output:
f o o

Input: {'a': 1, 'b': 1, 'c': 1}
Output:
a b c

Pictorial Presentation:

Python: Find a string consisting of space-separated characters with given counts.

Sample Solution:

Python Code:

#License: https://bit.ly/3oLErEI

def test(counts):
     return " ".join(c for c, i in counts.items() for _ in range(i))
strs = {"f": 1, "o": 2}
print("Original string:",strs) 
print("String consisting of space-separated characters with given counts:")
print(test(strs))
strs = {"a": 1, "b": 1, "c":1}
print("\nOriginal string:",strs) 
print("String consisting of space-separated characters with given counts:")
print(test(strs)) 

Sample Output:

Original string: {'f': 1, 'o': 2}
String consisting of space-separated characters with given counts:
f o o

Original string: {'a': 1, 'b': 1, 'c': 1}
String consisting of space-separated characters with given counts:
a b c

Flowchart:

Flowchart: Python - Find a string consisting of space-separated characters with given counts.

Visualize Python code execution:

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Python Code Editor :

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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