What is __del__ in Python?
Summary: In this tutorial, we will learn what __del__ is in Python and when we should use it in our Python code. __del__ in Python __del__ is a reserved function…
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May 5, 2021
What is __repr__ and __str__ in Python?
Summary: In this tutorial, we will learn what __repr__ and __str__ are and what is the difference between them in Python. __repr__ in Python __repr__ is a reserved function in…
April 24, 2021
What is __init__ and self in Python?
Summary: In this tutorial, we will learn what __init__ and self are in Python and when we should use them in our Python program. What is __init__ in Python? __init__…
April 20, 2021
What is __name__ == ‘__main__’ in Python?
Summary: We often see and use __name__ == '__main__' expression in Python scripts or modules. what is its significance, why it is used in Python? Lets' discuss this in this…
March 27, 2021
Algorithms: Learn how to solve problems using programs.
Why do Shortest Path Algorithms fail in Graphs with Negative Cycle?
The shortest path algorithms such as Dijkstra and Bellman-Ford algorithm don't give the right results when there's a negative cycle in the graph. Dijkstra's AlgorithmBellman-Ford AlgorithmGraph with Negative EdgeFailsPassGraph with…
December 11, 2020
Algorithms: Learn how to solve problems using programs.
Why doesn’t Dijkstra work with negative weights?
Dijkstra's algorithm is the most popular algorithm to solve single-source shortest path problems. It can find the shortest path from a given source to all other vertices in a given…
December 6, 2020
Joins in MySQL
Summary: In this tutorial, we will learn what are Joins in MySQL, what are the different types of MySQL Joins and how and when to use different joins in MySQL.…
October 15, 2020
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Python += list [Explained]
Python += operator is often used for concatenating list in Python. Python += list expression is similar to the list + list expression but they operate differently. Consider the following…
October 5, 2020
TypeError: Not all arguments converted during string formatting
TypeError: not all arguments converted during string formatting is an error in Python that often occurs in the following cases: When two string format specifiers are mixed, andWhen the number…
September 20, 2020
INSERT INTO – Insert Record Into MySQL Table
Summary: In this tutorial, we will learn how to use MySQL INSERT INTO statement to insert records into a MySQL table along with examples. Introduction to MySQL INSERT INTO statement…
September 12, 2020
