Use the buit-in index() method from list to find the index of an item in a list in Python. Remember the index count starts at 0, so the position of ‘mclaren’ is 2. car_brands = ['bmw', 'ferrari', 'mclaren'] position =…
Use the randrange() method to generate a random integer in a given range. The example below generates numbers in the range from 1 to 100. Notice that the possible outcomes are from 1 to 99, 100 is excluded. import random…
The timedelta object from the datetime module allows you to add any number of days to a date object. In this example I always take the current date using the date.today() method. Then I set a timedelta of 2 days…
Use the random() method from the random module to generate a float number between 0 and 1. 0 is included as a possible outcome and 1 is excluded, meaning the method might return a 0, but never 1. import random…
Let’s see how to convert a datetime into a string in Python. This conversion can be done using the strftime() method from the datetime class. This example shows a few different formats for current date and time: Default date and…
The timedelta object from the datetime module allows you to subtract any number of days from a date object. In this example I always take the current date using the date.today() method. Then I set a timedelta of 2 days…
To count the number of occurrences of all elements in a list in Python, use the Counter class from the collections module. Counter will return a dictionary with the items as keys and the number of occurrences of each as…
Use the len() built-in function to get the number of items in list. car_brands = ['bmw', 'ferrari', 'mclaren'] print(len(car_brands)) 3
To count the number of occurrences of an item in a list, just use the count() method. car_brands = ['ferrari', 'bmw', 'mclaren', 'bmw', 'bmw', 'ferrari'] print(car_brands.count('bmw')) print(car_brands.count('ferrari')) 3 2
Let\’s see how to convert a string with date and time information into a datetime object in Python. This conversion can be done using the datetime.strptime() method. First Example The first example expects a string with the following format: %b:…