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Python: Split a string into strings if there is a space in the string, otherwise split on commas, otherwise the list of lowercase letters with odd order

Python Programming Puzzles: Exercise-19 with Solution

Write a Python program to split a given string (s) into strings if there is a space in the string, otherwise split on commas if there is a comma, otherwise return the list of lowercase letters with odd order (order of a = 0, b = 1, etc.)

Input:
a b c d
Split the said string into strings if there is a space in the string, 
otherwise split on commas if there is a comma, 
Output:
['a', 'b', 'c', 'd']

Input:
a,b,c,d
Split the said string into strings if there is a space in the string, 
otherwise split on commas if there is a comma,
Output:
['a', 'b', 'c', 'd']

Input:
abcd
Split the said string into strings if there is a space in the string, 
otherwise split on commas if there is a comma, 
Output:
['b', 'd']

Pictorial Presentation:

Python: Split a string into strings if there is a space in the string, otherwise split on commas, otherwise the list of lowercase letters with odd order.
Python: Split a string into strings if there is a space in the string, otherwise split on commas, otherwise the list of lowercase letters with odd order.
Python: Split a string into strings if there is a space in the string, otherwise split on commas, otherwise the list of lowercase letters with odd order.

Sample Solution:

Python Code:

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

def test(s):
    if " " in s:
        return s.split(" ")
    if "," in s:
        return s.split(",")
    return [c for c in s if c.islower() and ord(c) % 2 == 0]

strs = "a b c d"
print("Original string:")
print(strs)
print("Split the said string into strings if there is a space in the string, \notherwise split on commas if there is a comma, \notherwise return the list of lowercase letters with odd order:")
print(test(strs))
strs = "a,b,c,d"
print("\nOriginal string:")
print(strs)
print("Split the said string into strings if there is a space in the string, \notherwise split on commas if there is a comma, \notherwise return the list of lowercase letters with odd order:")
print(test(strs))
strs = "abcd"
print("\nOriginal string:")
print(strs)
print("Split the said string into strings if there is a space in the string, \notherwise split on commas if there is a comma, \notherwise return the list of lowercase letters with odd order:")
print(test(strs))

Sample Output:

Original string:
a b c d
Split the said string into strings if there is a space in the string, 
otherwise split on commas if there is a comma, 
otherwise return the list of lowercase letters with odd order:
['a', 'b', 'c', 'd']

Original string:
a,b,c,d
Split the said string into strings if there is a space in the string, 
otherwise split on commas if there is a comma, 
otherwise return the list of lowercase letters with odd order:
['a', 'b', 'c', 'd']

Original string:
abcd
Split the said string into strings if there is a space in the string, 
otherwise split on commas if there is a comma, 
otherwise return the list of lowercase letters with odd order:
['b', 'd']

Flowchart:

Flowchart: Python - Split a string into strings if there is a space in the string, otherwise split on commas, otherwise the list of lowercase letters with odd order.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:


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