EasyObj 0.2.6

EasyObj lets you manipulate objects as easily as in JavaScript.

EasyDict

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EasyObj lets you manipulate objects as easily as in JavaScript.

Installation

pip install easyobj

Usage

Better List

from EasyObj import BetterList

betterlist = BetterList([1, 2, 3, 4, 5])
# betterlist: BetterList([1, 2, 3, 4, 5])

print(betterlist.length)
# 5

betterlist.append(6)
# betterlist: BetterList([1, 2, 3, 4, 5, 6])

print(betterlist.join(" "))
# '1 2 3 4 5 6'

print(betterlist.filter(lambda x: x >= 4))
# BetterList([4, 5, 6])

print(betterlist.concat(["a", "b", "c"]))
# BetterList([1, 2, 3, 4, 5, 6, 'a', 'b', 'c'])

print(betterlist.map(lambda x: x * 2))
# BetterList([2, 4, 6, 8, 10, 12])

And so on...

Most Methods are exactly the same as the Array object methods in JavaScript.

But since Python does not support using reserved words as method names, we have converted some method names:

JavaScript	Python
Array.prototype.with()	EasyObj.BetterList._with()
Array.from()	EasyObj.BetterList._from()

Better Dict

Because it is difficult to implement many of the features of JavaScript's Object in Python, we only implemented a part of them.

Each BetterDict object will perform an operation similar to EasyDict, converting a normal dictionary into a nested BetterDict object.

from EasyObj import BetterDict

betterdict = BetterDict({"very": "good"})
# {'very': 'good'}

betterdict.very
# 'good'

Due to Python syntax limitations, we cannot add new methods to the BetterDict class like in JavaScript, so we need to introduce another DictUtils class to implement some of the features in JavaScript

from EasyObj import DictUtils

DictUtils.keys(betterdict)
# ['very']

EasyObj also implements the Object.seal and Object.freeze methods, which convert the BetterDict object into a SealedBetterDict and FrozenBetterDict object.

sealedDict = DictUtils.seal(betterdict)
# {'very': 'good'}

sealedDict.very = "bad"
# {'very': 'bad'}

sealedDict.a = 1
# AttributeError: SealedDict object does not support assigning new attributes

frozenDict = DictUtils.freeze(betterdict)
# {'very': 'good'}

sealedDict.very = "bad"
# AttributeError: SealedDict object does not support assigning new attributes

sealedDict.a = 1
# AttributeError: SealedDict object does not support assigning new attributes

Due to Python syntax limitations, we have converted some method names:

JavaScript	Python
Object	EasyObj.DictUtils
Object.prototype.isPrototypeOf()	EasyObj.DictUtils.isPrototypeOf()

Due to Python syntax limitations, the following methods cannot be implemented:

Method name
Object.defineProperty()
Object.getOwnPropertyDescriptor()
Object.getOwnPropertyDescriptors()
Object.getPrototypeOf()
Object.isExtensible()
Object.preventExtensions()
Object.setPrototypeOf()
Object.prototype.hasOwnProperty()
Object.prototype.propertyIsEnumerable()
Object.prototype.toLocaleString()
Object.prototype.toString()
Object.prototype.valueOf()

License

GPLv3

TODO

• Implement BetterStr for better strings
• Implement more JavaScript methods