In [29]:

    

import pandas as pd
import numpy as nu
from effective_python.code import VoltageResistance
from effective_python.code import BoundedResistance


def test_resistor():
    r1 = VoltageResistance(5e3)
    print(f"when voltage = {r1.voltage, r1._voltage}, current is :{r1.current}")
    r1.voltage = 10
    print(f"when voltage = {r1.voltage, r1._voltage}, current is :{r1.current}")
    
    r2 = BoundedResistance(1e3)
    r2.ohms = 5e3
    r2.voltage = 10
    print(f"when resistance = {r2.ohms} and voltage = {r2.voltage}, current is :{r2.current}")
    

if __name__ == '__main__':
    test_resistor()


    

    




when voltage = (0, 0), current is :0
when voltage = (10, 10), current is :0.002
when resistance = 5000.0 and voltage = 10, current is :0.002

In [47]:

    

import json
from effective_python.code import ToDict
from effective_python.code import JsonMixin
from effective_python.code import BinaryTree
from effective_python.code import BinaryTreeWithParent
       
# tree_with_parent = BinaryTreeWithParent(10)
# tree_with_parent.left = BinaryTreeWithParent(7, parent=tree_with_parent)
# tree_with_parent.right = BinaryTreeWithParent(9, parent=tree_with_parent)
# tree_with_parent.left.right = BinaryTreeWithParent(9, parent=tree_with_parent.left)
# print(json.dumps(tree_with_parent.to_dict(), indent=True))

class DatacenterRack(ToDict, JsonMixin):
    def __init__(self, switch=None, machines=None):
        self.switch = Switch(**switch)
        self.machines = [
            Machine(**kwargs) for kwargs in machines]

        
class Switch(ToDict, JsonMixin):
    """"""
    def __init__(self, ports, speed):
        """"""
        self.ports = ports
        self.speed = speed
    
    
class Machine(ToDict, JsonMixin):
    """"""
    def __init__(self, cores, ram, disk):
        self.cores = cores
        self.ram = ram
        self.disk = disk
    pass
    
    
serialized = """{
"switch": {"ports": 5, "speed": 1e9},
"machines": [
    {"cores": 8, "ram": 32e9, "disk": 5e12},
    {"cores": 4, "ram": 16e9, "disk": 1e12},
    {"cores": 2, "ram": 8e9, "disk": 5e9}
]
}"""
deserialized = DatacenterRack.from_json(serialized)
roundtrip = deserialized.to_json()
switch_dic = {"ports": 5, "speed": 1000000000.0}
sw = Switch(**switch_dic)


    

    
Out[47]:





{'ports': 5, 'speed': 1000000000.0}

In [86]:

    

def kwargs_t(a, b):
    print(a, b)
    pass

f = kwargs_t()


    

    




('b', 2) ('a', 1)

In [2]:

    

set1 = set({'a':1,'b':2}.items())