pythonicjs-web

A js library for those that like python.

Installation

npm install -g pythonicjs-web@latest

Tests

npx mocha pythonicjs_web_tests.js

Also check the test file to see how to use and test certain functionality

Importing & Using

In nodejs

/** Require*/
require("pythonicjs-web")()

In the browser you can import it like this

<script src="https://unpkg.com/pythonicjs-web@latest"></script>

Usage

Printing

Syntax: print(...message)

Prints messages to the console.

print("Hello", "World");

Output

Hello World

Pretty Printing

Syntax: pprint(object)

Prints a prettified JSON representation of the object.

const exampleObject = { key: 'value', number: 42 };
pprint(exampleObject);

Output

{
  "key": "value",
  "number": 42
}

Logging

Syntax: log(...message)

Logs messages to the console with a timestamp.

log("This is a log message");

Output

2023-11-12T16:36:11.004Z ::==> This is a log message

Mathematical Functions

Syntax: abs(object)

Returns the absolute value of a number.

Syntax: pow(x, y)

Returns x to the power of y.

Syntax: random(min, max)

returns a random number between min, max

Syntax: round(number, ndigits)

rounds the number to n digits

Syntax: sum(list)

Returns the sum of all elements in the list.

Syntax: max(list)

Returns the maximum value in the list.

Syntax: min(list)

Returns the minimum value in the list.

Syntax: len(object)

Returns the length of the object, it could be string or list

Syntax: avg(list)

Returns the average value of the elements in the list.

List Operations

Syntax: sorted(list, order)

Sorts a list in ascending or descending order.

const ascending = sorted([3, 1, 4, 1, 5, 9]);
const descending = sorted([3, 1, 4, 1, 5, 9], key=null, reverse=true);

const sorted_dict_ascending = sorted( {b:4, p:5, a:1, q:0, c:-1})
const sorted_dict_descending = sorted( {b:4, p:5, a:1, q:0, c:-1}, key=null, reverse=true)

print(ascending)
print(descending)
print(sorted_dict_ascending)
print(sorted_dict_descending)

output

[ 1, 1, 3, 4, 5, 9 ]
[ 9, 5, 4, 3, 1, 1 ]
{ a: 1, b: 4, c: -1, p: 5, q: 0 }
{ q: 0, p: 5, c: -1, b: 4, a: 1 }

Syntax: reversed(array)

Reverses the order of elements in an array.

const reversedArray = reversed([1, 2, 3, 4]);
print(reversedArray)

output

[4, 3, 2, 1]

Type Cast Operations

Syntax: str(object)

Converts an object to a string.

Syntax: int(string)

Converts a string to an integer

Syntax: float(string)

Converts a string to a float

Utility Functions

Syntax: timestamp()

Returns the current timestamp in ISO format.

2023-11-12T12:34:56.789Z

Object Functions

Syntax: keys(object)

Returns an array of keys in an object.

Syntax: values(object)

Returns an array of values in an object.

Syntax: copy(object)

Creates a shallow copy of an object or array.

Syntax: deepcopy(object)

Creates a deep copy of an object or array.

Syntax: is_empty(object)

Checks if an object is empty.

Syntax: not(object)

Returns a Boolean - a logical negation of the object, just like in Python. Returns true if the object is null or undefined or has length 0

not('')            // true
not ("")           // true

not([])            // true
not({})            // true

not(null)          // true
not(undefined)     // true

not(0)             // true
not(1)             // false
not(-3.5)          // false
not(-0.00000001)   // false
not([1, 2])        // false
not({"a":"b"})     // false

Syntax: is_null(object)

Returns a Boolean by checking if an object is null.

Syntax: is_undefined(object)

Returns a Boolean by checking if an object is undefined.

Syntax: equals(object1, object2)

Returns a Boolean by checking if an object is equal to another object

Syntax: index(object, item)

Returns the index of the specified item within the object array. If the item is not found in the array, it returns -1.

Syntax: first(array)

Returns the first item of the array

Syntax: last(array)

Returns the last item of the array

Syntax: remove(array, item)

Returns a new array with all instances of item removed

Syntax: difference(a, b)

Returns a new array with elements in array 'a' but not in array 'b'

Syntax: union(a, b)

Returns a new array with unique items present in one or more arrays

Syntax: intersection(a, b)

Returns a new array with unique items that are common in both arrays

Syntax: without(list, values)

Returns a new that includes only the elements from the original array that are not present in the values array

Syntax: base(number, base)

It converts the given number to a string representation in the specified base

Syntax: range(start, end, step )

Returns an array from start to end in step increments just like the range function in Python It can be supplied 1 parameter, 2 parameters (start, end), or 3 parameters (start, end, step)

Syntax: reverse(array )

Returns an array that is reversed

Syntax: filter(operation, array )

Filter the elements of the input array based on the condition specified by the operation function. The operation function is expected to be a callback function that returns a boolean value

Syntax: hex(a)

Converts the unsigned decimal number 'a' to its hexadecimal representation with a "0x" prefix

Syntax: map(operation, array )

applies the provided operation function to each element of the array and returns a new array containing the results.

Syntax: getattr(obj, name)

retrieves the value of the property with the specified name from the given obj.

Syntax: setattr(obj, name, value)

sets the value of the property with the specified name to the given value in the provided obj

Syntax: hasattr(obj, name)

returns a boolean by checking if the specified name is a property in the given obj and

Syntax: invert(obj)

returns an object with key and values inverted

Syntax: random(min, max)

returns a random number between min and max

Syntax: round(number, ndigits = null)

rounds the number (to ndigits if supplied)

To do

• Categorize functionality a bit better
• write more tests for the functions
• Improve documentation