JavaScript rewritten as python

With the rapid development of Web development, JavaScript has become one of the most important languages ​​​​in front-end development. However, Python is becoming more and more popular in many application scenarios. Therefore, for developers who like Python, rewriting JavaScript into Python is easier to understand and learn. Next, we will implement a simple example to convert JavaScript code into Python code.

Our example is a simple calculator that can perform addition, subtraction, multiplication, and division operations. First, let's take a look at the JavaScript code:

//定义加法函数
function add(a, b) {
  return a + b;
}

//定义减法函数
function subtract(a, b) {
  return a - b;
}

//定义乘法函数
function multiply(a, b) {
  return a * b;
}

//定义除法函数
function divide(a, b) {
  return a / b;
}

//测试代码
console.log(add(1, 2)); //3
console.log(subtract(3, 2)); //1
console.log(multiply(2, 4)); //8
console.log(divide(6, 3)); //2

This code defines four basic arithmetic functions, and then uses console.log for test output. Now, we want to convert this into Python code. We can rewrite it like this:

#定义加法函数
def add(a, b):
    return a + b

#定义减法函数
def subtract(a, b):
    return a - b

#定义乘法函数
def multiply(a, b):
    return a * b

#定义除法函数
def divide(a, b):
    return a / b

#测试代码
print(add(1, 2)) #3
print(subtract(3, 2)) #1
print(multiply(2, 4)) #8
print(divide(6, 3)) #2

As you can see, in Python code, the way functions are defined is different from JavaScript. Python uses the def keyword to define functions. At the same time, there is no semicolon in the Python language, so each line of code can be written without a semicolon.

In addition, the way to call functions in the Python language is to use the print function for output instead of using console.log. These are small differences, but they still have a certain impact for beginners.

Generally speaking, JavaScript and Python still have many similarities. However, there are some differences in the syntax structure and function calling methods. We hope that by rewriting this example, we can help developers who want to learn Python quickly get started and understand the essence of the Python language.

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