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:
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
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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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