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NumPy: Get the dates of yesterday, today and tomorrow

NumPy DateTime: Exercise-2 with Solution

Write a NumPy program to get the dates of yesterday, today and tomorrow.

Sample Solution:-

Python Code:

import numpy as np
yesterday = np.datetime64('today', 'D') - np.timedelta64(1, 'D')
print("Yestraday: ",yesterday)
today     = np.datetime64('today', 'D')
print("Today: ",today)
tomorrow  = np.datetime64('today', 'D') + np.timedelta64(1, 'D')
print("Tomorrow: ",tomorrow)

Sample Output:

Yestraday:  2017-03-24                                                 
Today:  2017-03-25                                                     
Tomorrow:  2017-03-26

Pictorial Presentation:

NumPy: Get the dates of yesterday, today and tomorrow.

Python-Numpy Code Editor:

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Previous: Write a NumPy program to display all the dates for the month of March, 2017.
Next: Write a NumPy program to count the number of days of a given month.

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Python: Tips of the Day

Decompose a collection:

Assume we have a function that returns a tuple of two values and we want to assign each value to a separate variable. One way is to use indexing as below:

abc = (5, 10)
x = abc[0]
y = abc[1]
print(x, y)

Output:

5 10

There is a better option that allows us to do the same operation in one line.

x, y = abc
print(x, y)

Output:

5 10

It can be extended to a tuple with more than 2 values or some other data structures such as lists or sets.

x, y, z = {1, 2, 3}
print(x, y, z)
x, y, z = ['a', 'b', 'c']
print(x, y, z)

Output:

1 2 3
a b c