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NumPy: Split a given text into lines and split the single line into array values

NumPy String: Exercise-22 with Solution

Write a NumPy program to split a given text into lines and split the single line into array values.

Sample text:
01 V Debby Pramod
02 V Artemiy Ellie
03 V Baptist Kamal
04 V Lavanya Davide
05 V Fulton Antwan
06 V Euanthe Sandeep
07 V Endzela Sanda
08 V Victoire Waman
09 V Briar Nur
10 V Rose Lykos

Sample Solution:

Python Code:

import numpy as np 
student = """01	V	Debby Pramod
02	V	Artemiy Ellie
03	V	Baptist Kamal
04	V	Lavanya Davide
05	V	Fulton Antwan
06	V	Euanthe Sandeep
07	V	Endzela Sanda
08	V	Victoire Waman
09	V	Briar Nur
10	V	Rose Lykos"""

print("Original text:") 
print(student)
text_lines = student.splitlines()
text_lines = [r.split('\t') for r in text_lines]
result = np.array(text_lines, dtype=np.str)
print("\nArray from the said text:")
print(result)

Sample Output:

Original text:
01	V	Debby Pramod
02	V	Artemiy Ellie
03	V	Baptist Kamal
04	V	Lavanya Davide
05	V	Fulton Antwan
06	V	Euanthe Sandeep
07	V	Endzela Sanda
08	V	Victoire Waman
09	V	Briar Nur
10	V	Rose Lykos

Array from the said text:
[['01' 'V' 'Debby Pramod']
 ['02' 'V' 'Artemiy Ellie']
 ['03' 'V' 'Baptist Kamal']
 ['04' 'V' 'Lavanya Davide']
 ['05' 'V' 'Fulton Antwan']
 ['06' 'V' 'Euanthe Sandeep']
 ['07' 'V' 'Endzela Sanda']
 ['08' 'V' 'Victoire Waman']
 ['09' 'V' 'Briar Nur']
 ['10' 'V' 'Rose Lykos']]

Python Code Editor:

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Python: Tips of the Day

Getting the last element of a list:

some_list[-1] is the shortest and most Pythonic.

In fact, you can do much more with this syntax. The some_list[-n] syntax gets the nth-to-last element. So some_list[-1] gets the last element, some_list[-2] gets the second to last, etc, all the way down to some_list[-len(some_list)], which gives you the first element.

You can also set list elements in this way. For instance:

>>> some_list = [1, 2, 3]
>>> some_list[-1] = 5 # Set the last element
>>> some_list[-2] = 3 # Set the second to last element
>>> some_list
[1, 3, 5]

Note that getting a list item by index will raise an IndexError if the expected item doesn't exist. This means that some_list[-1] will raise an exception if some_list is empty, because an empty list can't have a last element.

Ref: https://bit.ly/3d8TfFP