#Pycharm venv install

Compiler: first compile and then execute - Compilation mode: Runs fast, but any small change requires an overall recompilation - Can be run off the build environment - Representative language: c language - Interpreter: Execute while interpreting - Interpretation: Slow running, but some changes do not require overall recompilation - Can't explain the operation of the environment - The representative language is Python Remote and Local - local: Python interpreter, py file in the same environment - Remote: Python interpreter, py files are not in the same environment, such as py project files on Windows local, Python interpreter on virtual machine Ubuntu, mapping py project files to Ubuntu virtual environment virtualenv What is a virtual environment: Copy a minimal version of the Python interpreter on the system with the tool The importance of a virtual environment: - Will not pollute the system environment - Isolation of different project environments Install Virtual Environment

#Pycharm venv code

Compiler/Interpreter: The translator between the high-level language and the machine translates the code into a binary machine code that the machine can execute, except that the operating principle and the translation process are different. Python - For the Python language, the 'compiler' in the broad sense is called the interpreter. In fact, we installed JAVA, C or Python, mainly the 'compiler' of this programming language installed.

c language - C language directly operates the hardware, the same algorithm, using C language, its execution efficiency is much higher than JAVA and other languages - C code execution requires a compiler - The compiler translates the code written in the programming language into a binary machine code that the machine can execute or 'understand'. However, this is still a low-level language, and there is room for improvement and improvement. Compared to machine code, it is more inclined to human language habits, easier to write and read, that is, a little abstract symbol conceptualization, which greatly improves the programming efficiency. Assembler, if you switch to another set of hardware, you can't run it. It is platform-dependent and you write on this hardware platform.

The writing of binary numbers is particularly lengthy and not human readable assembly language - Assembly language is a low-level language of programmable devices, also known as symbolic language - In assembly language, replace the opcode of the machine instruction with a mnemonic, replacing the address of the instruction or operand with an address symbol or label - In different devices, the assembly language corresponds to different machine language instruction sets, which are converted into machine instructions through the assembly process, which means that different platforms cannot be directly ported. , can distinguish between 0 and 1, which in the network signal, is inherently self-contained anti-interference ability.

Similarly, in terms of physical storage, the track of the hard disk can only distinguish between punched and unpunched states, and is also 0 and 1 - Simultaneous binary for easy addition, subtraction and counting coding - Binary is easy to judge logically (yes or no), logical judgment is usually also two states, which is very compatible with binary - Binary indicates that the data also has strong anti-interference ability and high reliability, because when it is subjected to a certain degree of electromagnetic interference, as long as it can distinguish whether it is high or low, it is not important as to how much higher or lower. , replaced by mathematics is two of 0 and 1. This article is reproduced from Bedding data representation method - The computer uses binary as its own machine language, which is the representation of the data, because the smallest computing unit of the computer is determined according to the high and low levels of the switch state, it only has the concept of on and off, high and low.