[It's not too late to learn Python from 2020] Part 3 Python Language Basic (1)

learning_times = 2
#Judgment by the number of studies
if learning_times > 0:
    print("Congratulations, your Python journey has begun!")

Birth of Python

** Python ** was born in 1990. Guido van Rossum of the Netherlands was involved in the development project of the educational language "ABC" and then developed ** Python **. However, the development of ** Python ** (Python) started in December 1989 as "Christmas time killing". The development of modern super-major programming languages started in a surprising way.

Features of Python

** Python ** is a general-purpose high-level language with the following features.

--Grammar simplification --Can be written with a small number of lines of code --Code is highly readable, easy to read and easy to write --Available for free on the internet ――The main body is the minimum necessary, and a rich and large-scale tool group specialized in various areas such as standard libraries, third-party libraries, and functions is prepared. --Compatible with many hardware and OS (platform) --You can write programs in object-oriented, imperative, procedural, functional, etc. formats. --A dynamically typed language with reference counting-based automatic memory management (garbage collector)

Python version

The main versions of Python are 2.x and 3.x. 2.x has recently expired and the current Python base is 3.x.

2.x support deadline

3.x support deadline

Python 2.x and 3.x grammatical differences

Grammar highlights

To improve the readability of the code, it is a grammar highlight to display the ** Python ** keywords and each part of the grammar in different colors.

# -*- coding:utf-8 -*-

#1 line comment

"""
Multi-line comment with three double quotes.
"""

'''
Multi-line comment with three single quotes.
'''


class Animal:
    """This is an animal class.
    """

    #Animal name
    name = ''
    #Number of legs
    leg_num = 0

    def __init__(self, name, leg_num):
        self.name = name
        self.leg_num = leg_num

    def tell_name(self):
        """Outputs animal name information.
        """

        print("The name of this animal is:{name}".format(name=self.name))

    def tell_leg_num(self):
        """Outputs information on the number of legs.
        """

        print("The number of legs of this animal is:{leg_num}".format(leg_num=self.leg_num))

The following is the effect written in VS Code. (With explanation)