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This article mainly explains "what are the characteristics of Python". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what are the characteristics of Python".

1. Object-oriented featur

Object-oriented programming solves the complexity of structured programming and makes programming closer to real life. Structured programming mixes data and logic together, which is not convenient for program maintenance. Object-oriented programming abstracts the behavior and attributes of objects, separates them, but organizes them reasonably. Python language has strong object-oriented characteristics and simplifies the object-oriented implementation. It eliminates object-oriented elements such as protection types, abstract classes and interfaces, and makes object-oriented concepts easier to understand.

two。 Built-in data structure

Python provides some built-in data structures that implement functions similar to those of collection classes in Java. The data structure of Python includes tuples, lists, dictionaries, collections and so on. The emergence of built-in data structure simplifies the design of the program. Tuples are equivalent to "read-only" arrays, lists can be used as variable-length arrays, and dictionaries are equivalent to HashTable types in Java. For details on how to use the built-in data structure, see Chapter 4.

3. Simplicity

The Python language has fewer keywords. It has no semicolons, begin, end, and other tags, and code blocks are separated by spaces or tab indentation. The Python code is simple, short, and easy to read. Python simplifies loop statements so that they can be read quickly even if the program structure is complex. For more information, please refer to Chapter 2.

4. Robustness

Python provides an exception handling mechanism, which can catch the exception of the program. In addition, the stack trace object of Python can indicate where and why the program went wrong. The exception mechanism can avoid unsafe exit and help programmers debug programs. For more information, please refer to Chapter 9.

5. Cross-platform

Python is compiled into platform-related binaries before it is interpreted and executed. This approach is similar to Java, but the execution speed of Python is faster. Applications written by Python can run on different operating systems such as Windows, UNIX, Linux, and so on. Python code written on one operating system can be ported to other operating systems with only a few modifications.

6. Expandability

Python is a language developed in C, so you can use C to extend Python and add new modules and classes to Python. At the same time, Python can be embedded in C, C++ language development projects, so that the program has the characteristics of scripting language.

7. Dynamic property

Python is similar to JavaScript, PHP, Perl and other languages, it does not need to declare additional variables, directly assign values to create a new variable.

8. Strongly typed language

Python's variables are created to correspond to a type that determines the type of variable based on the content of the assignment expression. Python has an internal mechanism for managing these variables, and different types of variables require type conversions.

9. Widely used

Python language is used in database, network, graphics and images, mathematical calculation, Web development, operating system expansion and other fields. There are many third party libraries that support Python. For example, PIL library (no longer maintained, replaced by Pillow) is used for image processing, NumPy library for mathematical calculation, WxPython library for GUI program design, Django framework for Web application development and so on.

Finally, here is an example of how to get started with Python:

Topic: use the nesting of conditional operators to complete this problem. Students whose grades > = 90 are represented by A, those between 60 and 89 are expressed by B, and those with scores below 60 are expressed by C. The implementation is as follows:

1 #! / usr/bin/python 2 #-*-coding:utf-8-*-3 def main (): 4s = int (raw_input ('Enter a number:')) 5 if s > = 90: 6 grade =' A7 elif s > = 60: 8 grade ='B' 9 else:10 grade = 'Che 11 print grade,12 13 if _ name__ = =' _ main__':14 main () Thank you for your reading The above is the content of "what are the characteristics of Python". After the study of this article, I believe you have a deeper understanding of what the characteristics of Python are, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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