Python for Beginners

The program is a set of algorithms that ensure the execution of the necessary actions. Conditionally, in the same way, it is possible to program an ordinary person by writing exact commands, so that, for example, he prepares tea. If the latter version uses natural speech (Russian, Ukrainian, English, Korean, etc.), then a special programming language will be required for the computer. Python is one of those. The programming environment will subsequently translate the commands into machine code, and the target of the person for which the algorithm was created will be executed. "Python" has its own syntax, which will be discussed below.

History of the language

Development began in the 1980s, and it was completed in 1991. The language of Python was created by Guido van Rossum. Although the main symbol of "Python" is a snake, it was named after the comedy American show.

When creating the language, the developer used some commands, already borrowed from existing Pascal, C and C ++. After the release of the first official version of the Internet, a whole group of programmers joined in to refine it and improve it.

One of the factors that made it possible to become "Python" is quite famous, is design. By many very successful specialists he is recognized as one of the best.

Features of the "Python"

The Python programming language for beginners will be an excellent teacher. It has a fairly simple syntax. It will be easy to understand the code, because it does not include many auxiliary elements, and a special structure of the language will teach you to indent. Of course, a well-designed program with a small number of commands will be immediately understandable.

Many syntactic systems were created with reliance on object-oriented programming. The Python language is no exception. Why was he born? It will facilitate the training of beginners, will help to remember some elements already qualified employees.

The syntax of the language

As already mentioned, the code is read quite easily and simply. "Python" has a consistent command, characterized by a clear execution. In principle, the operators used will not seem even difficult for novices. This is the difference between the Python language. Its syntax is easy and simple.

Traditional operators:

• When setting the condition, use the if-else construct. If there are too many such lines, you can enter the elif command.
• Class is intended to understand the class.
• One of the simple operators is pass. He does nothing, fits for empty blocks.
• Cyclical commands are while and for.
• The function, method, and generator are determined by def.

In addition to single words, the Python programming language allows you to use expressions as operators. Due to the use of string strings, you can reduce the number of individual commands and parentheses. So-called lazy calculations are used, that is, those that are satisfied only when the condition requires it. These include and and.

The process of writing programs

The interpreter works on a single mechanism: when writing a line (after which the "Enter" is put), it is immediately executed, and a person can already see some result. This is useful and will be convenient enough for beginners or those who want to test a small piece of code. In compiled programming environments, the programmer would have to write the whole program first, only then start it and check for errors.

The programming language Python (for beginners, as it became clear, it fits perfectly) in the Linux operating system allows you to work directly in the console itself. You should write the name of the code "Python" in the English language on the command line. It will not be difficult to create your first program. First of all, it should also be taken into account that you can use the interpreter here as a calculator. Since with the syntax often young and novice professionals are not friendly, then you can write the algorithm in this way:

6 + 4.

10 * (4-6).

6.1 + 1.8 / 9.

After each line it is necessary to put "Enter". The answer will be displayed immediately after it is pressed.

Data used by Python

Data used by computers (and programming languages) are represented by several types, and this is quite obvious. Numbers are fractional, integer, can consist of a set of digits or be very massive because of the fractional part. To make it easier for the interpreter to work with them, and he could understand what is happening, a certain type should be set. Moreover, it is necessary that the numbers fit into the allotted memory cell.

The most common data types used by the Python programming language are:

• Integer. We are talking about integers having both a negative and a positive value. Zero is also included in this type.
• In order for the interpreter to understand that it is working with fractional parts, you need to set the float point type. As a rule, they use it when using numbers with a variable point. It should be remembered that when writing a program, you must adhere to the record "3.25", and not use a comma "3.25".
• In the case of adding lines, the Python programming language allows you to add a string type. Often words or phrases are enclosed in single or double quotes.

Disadvantages and advantages

In the last few decades, people have been more interested in how much time to spend on data acquisition and less - on the fact that they were processed by a computer. The Python language, which is only positive, is the highest code.

Disadvantages of "Python" is practically nonexistent. The only serious disadvantage is the slowness in the execution of the algorithm. Yes, if you compare it with "C" or "Java," he is, frankly, a turtle. This is explained by the fact that this language is interpreted.

The developer took care to add to the "Python" the best. Therefore, when you use it, you can notice that it has absorbed the best features of other higher programming languages.

In the event that the idea that is implemented by the interpreter is not impressive, then it will be possible to understand this almost immediately, after writing a few dozen lines. If the program is worthwhile, then the critical section can be improved at any time.

Now there is more than one group of programmers working on improving Python, so it's not a fact that the code written in C ++ will be better than the one created with Python.

Which version is better to work with?

Now two versions of a syntax system like the Python language are widely used at once. For beginners, the choice between them will be quite difficult. It should be noted that 3.x is still under development (although released to the masses), while 2.x is a fully completed version. Many people advise using 2.7.8, since it practically does not lag or get lost. In the 3.x version there are no radical changes, so at any time your code can be transferred to the programming environment with the update. To download the necessary program, you should go to the official site, select your operating system and wait for the download to finish.