What are the Comparisons Between Python Lists, Dictionaries, and JavaScript Arrays, and Objects?

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How do Python lists and dictionaries compare to JavaScript arrays and objects?

1. Python List vs. JavaScript Array:

• Python List: An ordered, mutable collection that can store items of different types. Lists are defined using square brackets.
• JavaScript Array: An ordered, mutable collection that can also store items of various types. Arrays are defined using square brackets as well.

Example:

• Python List:

  my_list = [1, 2, 3, "hello"]
  

• JavaScript Array:

  const myArray = [1, 2, 3, "hello"];
  

Python Dictionary vs. JavaScript Object:

• Python Dictionary: A mutable collection of key-value pairs where keys must be unique and immutable. Dictionaries are defined using curly braces.
• JavaScript Object: A collection of key-value pairs (properties) where keys are strings (or Symbols) and can be dynamically added or modified. Objects are also defined using curly braces.

Example:

• Python Dictionary:

  my_dict = {
      "name": "Alice",
      "age": 30
  }
  

• JavaScript Object:

  const myObject = {
      name: "Alice",
      age: 30
  };
  

Summary

• List (Python) is similar to Array (JavaScript): Both are ordered and mutable collections.
• Dictionary (Python) is similar to Object (JavaScript): Both store key-value pairs and are mutable.