NumPy: Capitalize the first letter, lowercase, uppercase, swapcase, title-case of all the elements of a given array
NumPy String: Exercise-3 with Solution
Write a NumPy program to capitalize the first letter, lowercase, uppercase, swapcase, title-case of all the elements of a given array.
Sample Solution:-
Python Code:
import numpy as np
x = np.array(['python', 'PHP', 'java', 'C++'], dtype=np.str)
print("Original Array:")
print(x)
capitalized_case = np.char.capitalize(x)
lowered_case = np.char.lower(x)
uppered_case = np.char.upper(x)
swapcased_case = np.char.swapcase(x)
titlecased_case = np.char.title(x)
print("\nCapitalized: ", capitalized_case)
print("Lowered: ", lowered_case)
print("Uppered: ", uppered_case)
print("Swapcased: ", swapcased_case)
print("Titlecased: ", titlecased_case)
Sample Input:
(['python', 'PHP', 'java', 'C++'], dtype=np.str)
Sample Output:
Original Array: ['python' 'PHP' 'java' 'C++'] Capitalized: ['Python' 'Php' 'Java' 'C++'] Lowered: ['python' 'php' 'java' 'c++'] Uppered: ['PYTHON' 'PHP' 'JAVA' 'C++'] Swapcased: ['PYTHON' 'php' 'JAVA' 'c++'] Titlecased: ['Python' 'Php' 'Java' 'C++']
Pictorial Presentation:
Python-Numpy 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
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