Problem Formulation and Solution Overview If you print all values from a dictionary in Python using print(dict.values()), Python returns a dict_values object, a view of the dictionary values. The representation prints the values enclosed in a weird dict_values(…) wrapper text, for example: dict_values([1, 2, 3]). Here’s an example: There are multiple ways to change the … Read more
Problem Formulation and Solution Overview This article will show you how to create, clean up, and format phone numbers in Python. To make it more interesting, we have the following scenario. Right-On Realtors has a Contact Us form on their main website containing several fields. One of these fields is a Phone Number. Upon submission, … Read more
The most Pythonic way to print a dictionary except for one or multiple keys is to filter it using dictionary comprehension and pass the filtered dictionary into the print() function. There are multiple ways to accomplish this and I’ll show you the best ones in this tutorial. Let’s get started! 🚀 👉 Recommended Tutorial: How … Read more
Problem Formulation and Solution Overview This article will show you how to extract a zip file in Python. A ZIP file is an archive file format that compresses one or more files into one primary location. This file type is known to quickly and easily transfer large amounts of data. Let’s say you have been … Read more
To print a list without its first and last elements, you can pass the result of slicing my_list[1:-1] into the print() function. This slices from the second element (included) to the last element (excluded) with negative index -1 that reads like “the first sequence element from the right”. Note that the stop index in the … Read more
To print a list without its last element, you can pass the result of slicing my_list[:-1] into the print() function. This slices from the first element (included) to the last element (excluded) with negative index -1 that reads like “the first sequence element from the right”. Note that the stop index in the slicing notation … Read more
To print a list without its first element, you can pass the result of slicing expression my_list[1:] into the print() function. This slices from the second list element to the last one. Note that the start index in the slicing notation [start:stop] is included in the output of the slicing operation. If the stop index … Read more
Problem Formulation Given a Python list of elements. If you print the list to the shell using print([1, 2, 3]), the output is enclosed in square brackets and separated by commas like so: [1, 2, 3] But you want the list without commas like so: [1 2 3] How to print the list without separating … Read more
How to Print a List Without Truncating? Per default, Python doesn’t truncate lists when printing them to the shell, even if they are large. For example, you can call print(my_list) and see the full list even if the list has one thousand elements or more! Here’s an example: However, Python may squeeze the text (e.g., … Read more
Problem Formulation and Solution Overview This article will show you how to subtract minutes from a datetime in Python. To make it more interesting, we have the following running scenario: ToyMax has 200 employees. All employees must swipe in and out daily using a time card reader. Sometimes the employee swipe-in times do not appear … Read more
Problem Formulation and Solution Overview This article will show you how to generate a random date between two dates in Python. 💬 Question: How would we write code to generate a random date between two dates? We can accomplish this task by one of the following options: Method 1: Use datetime.timedelta() and random.random() Method 2: … Read more
The “TypeError: ‘method’ object is not subscriptable” occurs when you call a method using square brackets, e.g., object.method[3]. To fix it, call the non-subscriptable method only with parentheses like so: object.method(3). How Does the Error Occur (Example) In the following minimal example, you attempt to define a custom “list” class and you try to access … Read more