NumPy: Shuffle numbers between 0 and 10
NumPy: Random Exercise-6 with Solution
Write a NumPy program to shuffle numbers between 0 and 10 (inclusive).
Sample Solution:
Python Code :
import numpy as np
x = np.arange(10)
np.random.shuffle(x)
print(x)
print("Same result using permutation():")
print(np.random.permutation(10))
Sample Output:
[2 7 1 5 3 9 0 4 6 8] Same result using permutation(): [8 9 0 4 7 3 1 6 5 2]
Pictorial Presentation:
Python-Numpy Code Editor:
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Previous: Write a NumPy program to create a random 10x4 array and extract the first five rows of the array and store them into a variable.
Next: Write a NumPy program to normalize a 3x3 random matrix.
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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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