MoonScript and Python comparison

a.moon

------------------
-- Basic Syntax --
------------------

if condition
  do_something!
  do_another_thing!
else
  do_different_thing!


--------------------------
-- Function Definitions --
--------------------------

-- Basic function
add = (x, y) -> x + y

-- Fat arrow (includes self)
method = (x) => @value + x

-- Default parameters
greet = (name="World") -> "Hello #{name}!"





-------------
-- Classes --
-------------

class Vehicle
  new: (@name, @speed) =>
    @running = false

  start: =>
    @running = true
    print "#{@name} started"

class Car extends Vehicle
  new: (@wheels=4) =>
    super "Car", 60





---------------------
-- Data Structures --
---------------------

-- Array-like table
items = {1, 2, 3, 4}

-- Key-value pairs
person = {
  name: "John"
  age: 30
  city: "New York"
}

-- Implicit table (no braces needed)
config = 
  debug: true
  timeout: 5000


--------------------------
-- String Interpolation --
--------------------------

name = "World"
greeting = "Hello #{name}!"  -- String interpolation

multiline = "This string
spans multiple lines"


-------------------
-- Comprehensions --
-------------------

-- List comprehension
doubled = [item * 2 for item in *items]
filtered = [item for item in *items when item > 5]

-- Table comprehension
lookup = {item, item^2 for item in *numbers}


-------------------------------------
-- Assignment and Update Operators --
-------------------------------------

x += 10
s ..= "world"
b and= true or false


-------------------------
-- Web App hello world --
-------------------------

lapis = require "lapis"  
  
class App extends lapis.Application  
  "/hello": => "Hello World!"  
  
  [hello_admin: "/admin"] => "Hello Admin"
  
  "/dashboard": =>  
    @html ->  
      a href: @url_for("hello_admin"), "Admin Panel"

a.py

# ============
# Basic Syntax
# ============

if condition:
    do_something()
    do_another_thing()
else:
    do_different_thing()


# ====================
# Function Definitions
# ====================

# Basic function
def add(x, y):
    return x + y

# Method with self
def method(self, x):
    return self.value + x

# Default parameters
def greet(name="World"):
    return f"Hello {name}!"


# =======
# Classes
# =======

class Vehicle:
    def __init__(self, name, speed):
        self.name = name
        self.speed = speed
        self.running = False

    def start(self):
        self.running = True
        print(f"{self.name} started")

class Car(Vehicle):
    def __init__(self, wheels=4):
        super().__init__("Car", 60)
        self.wheels = wheels


# ===============
# Data Structures
# ===============

# List
items = [1, 2, 3, 4]

# Dictionary
person = {
    "name": "John",
    "age": 30,
    "city": "New York"
}

# No equivalent to implicit tables





# ====================
# String Interpolation
# ====================

name = "World"
greeting = f"Hello {name}!"  # f-string interpolation

multiline = """This string
spans multiple lines"""


# ==============
# Comprehensions
# ==============

# List comprehension
doubled = [item * 2 for item in items]
filtered = [item for item in items if item > 5]

# Dictionary comprehension
lookup = {item: item**2 for item in numbers}


# ===============================
# Assignment and Update Operators
# ===============================

x += 10
s += "world"
b &= True or False


# ===================
# Web App hello world
# ===================

from flask import Flask  
  
app = Flask(__name__)  
  
@app.route("/hello")  
def hello():  
    return "Hello World!"  
  
@app.route("/admin")  
def hello_admin():  
    return "Hello Admin"

@app.route('/dashboard')
def dashboard():
    return f'<a href="{url_for("hello_admin")}">Admin Panel</a>'