How fast is C++ compared to Python? (2024)

PROGRAMMING

How fast is C++ compared to Python? (3)

There are millions of reasons to love Python (especially for data scientists). But how is Python different from more professional low-level programming languages like C or C++? I guess this is a question that many data scientists or Python users asked or will ask themselves one day. There are many differences between Python and languages like C++. For this article, I am going to show you how fast C++ is compared to Python with a super simple example.

How fast is C++ compared to Python? (4)

To show the difference, I decided to go with a simple and practical task instead of an imaginary task. The task that I am going to accomplish is to generate all possible DNA k-mers for a fixed value of “k”. If you don’t know about DNA k-mers, I explain it in plain language in the next section. I chose this example because many genomic-related data processing and analysis tasks (e.g. k-mers generation) are considered computationally intensive. That’s a reason why many data scientists in the field of bioinformatics are interested in C++ (in addition to Python).

How fast is C++ compared to Python? (2024)

FAQs

How fast is C++ compared to Python? ›

Now, let's take a look at the same algorithm in C++. After compiling, if you run the code, it takes about 2.42 seconds to generate all 67 million 13-mers. It means Python takes 25 times more time to run the same algorithm compared to C++.

Is C++ faster than Python? ›

Speed: As a compiler-based language, C++ is faster than Python. The same code running in both programs simultaneously will generate in C++ first.

Is C++ the fastest language? ›

C++ is considered to be the fastest programming language in compilation with C. These languages are famous for building high-performance applications and allow finely tuned control of the overall code execution.

How much time C is faster than Python? ›

It is said that python is 100 times slower than C. Only if you try to implement low-level algorithms with integers and characters and refuse to use any of the high level functions written in optimised C !

How fast can I learn Python if I know C++? ›

If you alteady know C and C++, then Python should be easy to learn, and fun. Python has more builtin functions, and way more modules and frameworks. If you only want to learn the syntax, then it should take about 10 to 20 hours, assuming you already know data structrures, functions and classes.

What can C++ do that Python cannot? ›

C++ is faster than Python because it is statically typed, which leads to a faster compilation of code. Python is slower than C++, it supports dynamic typing, and it also uses the interpreter, which makes the process of compilation slower.

Which is tougher Python or C++? ›

Python's syntax is a lot closer to English and so it is easier to read and write, making it the simplest type of code to learn how to write and develop with. The readability of C++ code is weak in comparison and it is known as being a language that is a lot harder to get to grips with.

Is C++ a dying language? ›

There's nothing outwardly wrong with C++, – that's why it's still so widely used today.” In 2022, C++ is a useful, up-to-date, and vital programming language, especially as many of the world's major operating systems such as Microsoft Windows were built from the program.

Is C++ actually faster than Java? ›

Java has solid runtime performance, but C++ still holds the crown since manual memory management is faster than garbage collection for real-world applications. Though Java can outperform C++ in certain corner cases due to JIT compilation, C++ wins most non-trivial cases.

What is the fastest coding language? ›

C and C++

C is considered to be the fastest programming language for low-level development. C is optimal for low-level programs, and C++ is best for commercial applications. These languages have similar syntax but C++, a C subset, is considerably broader.

Is C# or Python faster? ›

C# outshines Python when it comes to runtime performance.

Why is C so much harder than Python? ›

In brief, C is an older, compiled, low level, procedural programming language. It has more control over itself and the computer, and it runs faster. Python, on the other hand, is an interpreted, high level, and object oriented programming language that's easier to learn.

Why is Python slow if its written in C? ›

Python is a high-level programming language: The code of Python looks very similar to how humans think. For that reason, it must Separate the details of the computer from you: memory management, pointers,… Hence, it is slower than “lower-level language” like C.

Is C++ hard if you know Python? ›

If you are new to C++, then it might take longer than usual. But if you already know other programming languages like Java and Python then learning this language will be easier. That is all about how long does it takes to learn C++. If you need more C++ knowledge, you can take C++ assignment help from us.

Is it OK to learn C++ and Python at the same time? ›

No, Always learn and master one programming language and then Choose other. If you learn two different languages same time your written programme will fail due to the incomplete knowledge of programming. I suggest you to learn python first then c++.

Does Python run slower than C++? ›

While this approach enhances developer productivity and code readability, it can impact the performance, making Python generally slower in data handling compared to languages like C++ or Java that offer more direct control over memory and data operations.

Why don't people use C++ for machine learning? ›

C++ requires a higher level of programming knowledge and experience compared to Python, making it more challenging to learn. Additionally, C++ has fewer machine learning libraries than Python, limiting its flexibility and ease of use.

Is C++ good for AI? ›

C++ is a powerful, high-performance language that is often used in AI for tasks that require intensive computations and precise control over memory management. It is commonly used in game AI and real-time systems. C++ also has libraries for AI such as Shark and mlpack.

Who earns more, C++ or Python? ›

Salaries: C++

A C++ developer has an average salary of ₹7,68,406 per annum in India as compared to the average salary of a Python developer, which is ₹3,88,544 per annum.

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