Python

Python has been an immensely popular programming language for a long time. This is mainly due to its easy-to-learn syntax and versatility. You can use Python in almost any area of software development. For example, you can work with: And much more. This makes Python also one of the hottest programming languages in the market.

To join a list of strings into a string in Python: For example, let’s join a list of words by a dash: Output: Perhaps the most common question is how to join strings into one string separated by space. To do this: Here is how it looks in code. Output: If you were looking for

To save a plot with matplotlib: Create a plot. Give a name to the plot. Call the matplotlib.pyplot.savefig() and pass the name as an argument. Here is an example where the script saves a plot to the same folder: To conveniently test this piece of code yourself, here is the code: This is how easy

To see where pip installs packages on your system, run the following command: And replace <package_name> with the actual name of the package. Example: NumPy Location For example, let’s see where NumPy is installed: Output: Here you can see that the location field says the package is installed at /usr/local/lib/python3.8/site-packages. The location obviously depends on

In Python, the difference between the append() and extend() method is that: Here is a quick cheat sheet that describes the differences. extend() append() Adds multiple elements to a list. Adds the input as a single element to a list. Length increases by the number of elements added. Length increases by 1. Time complexity is

In Python 3.7+ it’s possible to sort a dictionary. Before Python 3.7 dictionaries were unordered and thus you could not sort them. To sort a dictionary in Python: For example, let’s sort a dictionary by values in descending order and print out the sorted values: This gives a following output: This is a comprehensive guide

To access the index in a for loop in Python, use the enumerate() function. For example: Output: This is a quick answer to your question. However, if you are unfamiliar with the syntax, or want to figure out alternative ways to access the index in a for loop, please stick around. In this guide you

In Python, copying a list can be unintuitive for beginners. This is because you cannot use the assignment operator to take an independent copy of a list. This can be confusing especially for beginner Pythonistas. To create an independent copy of a list in Python, you need to use the copy module’s deepcopy() function like