ChrisProblem 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
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
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
Welcome to the Finxter blog! My name is Chris, and I started this coding venture a couple of years ago. Check out this podcast generated by NotebookLM about my journey: Over the years, I have chatted with tens of thousands of Finxters who shared their stories and struggles with me. 👉 See here and here to … 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
Problem Formulation Given an integer number. How to sum over all digits of this number to compute the crossfoot (cross total)? Consider the following examples: 12 –> 1+2 = 3 123 –> 1+2+3 = 3 244 –> 2+4+4 = 10 981223 –> 9+8+1+2+2+3 = 25 Method 1: sum() with Generator Expression The Python built-in sum(iterable) … Read more
💬 Question: Given a Boolean value True or False. How to convert it to a string “True” or “False” in Python? Note that this tutorial doesn’t concern “concatenating a Boolean to a string”. If you want to do this, check out our in-depth article on the Finxter blog. Simple Bool to String Conversion To convert … Read more
Easy Solution Use the addition + operator and the built-in str() function to concatenate a boolean to a string in Python. For example, the expression ‘Be ‘ + str(True) yields ‘Be True’. The built-in str(boolean) function call converts the boolean to a string. The string concatenation + operator creates a new string by appending the … Read more