Perhaps many people have heard a story like this: a company's server will crash without warning every three months, how can you not find the reason, in order to avoid the problems that may be caused by the crash, only every 2 Manually restart the server once a month. Behind this kind of somewhat eccentric event, a series of memory errors represented by memory leaks are often behind the scenes.

This article does not cover too much grammatical detail, focusing on the differences between Python and other programming languages, so this article is suitable for the following types of readers: a simple understanding of commonly used programming languages (C, C++, Java, etc.) Python is curious and interested readers.

Electronic products may introduce various defects due to the extensive use of materials such as components and complicated processing. Whether it is component defects or processing defects, it can be divided into obvious defects and potential defects.

Surface Mount Technology (SMT), commonly known as electrical equipment, refers to the circuit assembly technology on the printed circuit board that does not require a through hole, directly attaches and solders the surface mount components to the specified position (ie, the pad) on the surface of the PCB. ·

Regular expressions are a logical formula for the manipulation of strings and special characters. Form a "rule string" with a specific combination of characters defined in advance