How to Efficiently Create a Range of Dates in Python?

Creating a Range of Dates in Python: An Improved Solution

To generate a list of dates within a specified range, one may resort to using nested loops and other arduous methods. However, Python offers a more streamlined approach to this task.

Consider the following code snippet:

<code class="python">import datetime

a = datetime.datetime.today()
numdays = 100
dateList = []
for x in range (0, numdays):
    dateList.append(a - datetime.timedelta(days = x))</code>

This code iteratively subtracts a day from the current date, creating a list of dates in the past. While functional, it can be improved upon.

A more efficient alternative is to utilize list comprehensions:

<code class="python">base = datetime.datetime.today()
date_list = [base - datetime.timedelta(days=x) for x in range(numdays)]</code>

In this iteration, we establish a base datetime object representing the current date. The list comprehension then generates a list of dates by subtracting the specified number of days from the base date. This approach is cleaner and more concise than the initial solution.

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