There is no Python access specifier (access specifier, C++ is similar to public and private), and this design is based on "we are all adults".
In Python language, functions are the first class. This means that they can be assigned to variables, which can return function types or accept functions as input. Class is also the first class. Python code is written quickly, but it runs slower than compiled languages. Fortunately, Python allows extensions to be added based on the C language, so we can optimize the code and eliminate bottlenecks, which is usually possible.
NumPy is a good example, it is very fast, because many arithmetic operations are not implemented in Python.
Python is widely used: Web application, automation, scientific modeling, large-scale data application and so on. It is also often used as a "glue language" to help other languages and components improve their running conditions. Python makes difficult things easier, so programmers can focus on the design of algorithms and data structures without dealing with the underlying details.
If you are applying for a Python development position, you should know what this language is and why it is so cool. And not good.
What is 2 pep 8?
Filtering is a programming specification and some suggestions on how to make your program more readable.
Its main contents include code arrangement, document arrangement, space use, annotation, document description, naming specification, coding scheme and so on.
3 What is pickling unpacking?
The pickle module reads any Python objects, converts them into strings, and then dumps them into a file using a dump function-a process called pickle.
On the contrary, the process of extracting the original Python object from the stored string file is called state.
4 4 How is Python interpreted?
Python is an interpretation language, and its source code can be run directly. Python interpreter converts source code into intermediate language, then into machine code, and then executes it.
5 How does 5Python manage memory?
Python's memory management is managed by private heap space. All Python objects and data structures are private heaps. Programmers cannot access the heap, only the interpreter can operate it.
The memory allocated for Python's heap space is executed by Python's memory management module. Its core API will provide programmers with some ways to access this module.
Python has its own garbage collection system, and the recovered memory can be used by other programs if it is not used.
What tools can help debug or do static analysis?
PyChecker is a static analysis tool, which can not only report errors in source code, but also report error types and complexity. Pylint is another tool to test whether the module meets the coding standard.