给出一篇英文文章，要求生成一个摘要，长度为原文一半，并保留最重要的信息。
In the early days of computing, programmers had to physically toggle switches to enter instructions. Today, we use programming languages to communicate with computers, and there are dozens of different languages in use. However, some programming languages are more popular than others. Python, for example, is widely used for data science and web development, while C++ is popular for developing operating systems and video games.
Programmers had to toggle switches to enter instructions in early computing. Today, programming languages are used with Python for data science and web development and C++ for operating systems and video games.