Python advanced "First article": Introduction to Python

Python introduction to the origin of 1.Python

Python is a programming language written by the famous "Uncle Turtle" Guido van Rossum during Christmas 1989 to send a boring Christmas.

2.C and Python, Java, C # and other languages of the connection and difference

Machine code refers to the computer can recognize the language--0/1, programming language ==> byte code ==> machine code

Other languages: Code compiles to get bytecode, virtual machines execute bytecode and convert to machine code and then execute on processor

Python and C

The language of Python is developed by C.

C language is a hardware-close language that can be used to write operating systems, so the C language is suitable for developing programs that seek to run faster and give full play to hardware performance. Python is a high-level programming language for writing applications.

C Language: The code compiles the machine code, the machine code executes directly on the processor, each instruction controls the CPU to work.

For use with: Python's class library is complete and concise, if you want to implement the same functionality, Python 10 lines of code can be solved, C may require 100 lines or more.

For speed: Python runs faster than C, forcing it to be slow.

In simple terms: Python is more concise, but slower; C is more complex, but runs faster

Python and Java, C #, etc.

For use with: Linux original Python, no other languages; The above languages have a very rich class library support

For speed: Python may be slightly slower in speed

So, there is no essential difference between Python and other languages, other differences are: good at a field, rich in talent, preconceived.

Types of 3.Python

• CPython

The official version of Python, implemented using the C language, is the most widely used, and the CPython implementation converts the source file (py file) into a bytecode file (PYc file) and then runs on the Python virtual machine.

• Jpython

Python Java implementation, Jython will dynamically compile Python code into Java bytecode, and then run on the JVM.

• IronPython

In Python's C # implementation, IronPython compiles Python code into C # bytecode and then runs on the CLR. (similar to Jython)

• PyPy (Special)

Python implements Python, which compiles Python bytecode bytecode into machine code. PyPy, the Python bytecode is further processed on the basis of Python, which improves execution speed!

• Other

such as Rubypython, Brython ...

Python advanced "First article": Introduction to Python