Python’s built-in enumerate function takes in any iterable sequence, such as a list, and yields the elements of the sequence along with an index number. This is useful for adding a count to every element of a list. The basic syntax of this function is: enumerate(sequence, start=0) where sequence is the list or iterable data … Continue reading Python: How to use enumerate( )
Month: September 2017
Python: How to use the dictionary get( ) method
Lets say we have a small Python dictionary called fruit that looks like this: fruit = {‘a’:’apple’, ‘b’:’banana’, ‘c’:’cherry’} The most common way to get a value is to retrieve it by its key, using this special syntax: name_of_dictionary[ name_of_key ] By using the name of the key in brackets after the name of the … Continue reading Python: How to use the dictionary get( ) method
Python: How to use List Comprehensions
List Comprehensions were introduced to the Python language in PEP-202 to provide a more concise syntactical way to produce lists where map(), filter(), for loops, and if statements would normally be used. A list comprehension can be summed up like this: new_list = [item action for item in existing_list with optional if condition] This is … Continue reading Python: How to use List Comprehensions
Flask: How to get up and running in less than 5 minutes
The following instructions are for running Flask on Windows with Python 3 (Anaconda). To run Flask, you will first need to install Flask in your Python Scripts folder. To do this, run `pip install flask` in a command window. Then confirm that the installation was successful by loading python and giving it the import flask command. … Continue reading Flask: How to get up and running in less than 5 minutes