raeq

def remove_even_items(the_dict: dict):

    # collect the keys of all the items to remove
    delete_these = set(k for k, v in the_dict.items() if v % 2 == 0)

    for delete_this in delete_these:
        del the_dict[delete_this]

    return the_dict

raeq

import json
from datetime import datetime


class PythonObjectEncoder(json.JSONEncoder):

    def default(self, an_object_value):

        if isinstance(an_object_value, str):
            return an_object_value

raeq

from datetime import datetime
import json


class PythonObjectEncoder(json.JSONEncoder):
    """PythonObjectEncoder.
    """
    def default(self, an_object_value):
        """default.

raeq

def invert_dictionary(input:dict)->dict:
    return {v: k for k, v in dict1.items()}

dict1 = {"a": 1, "b": 2, "c": 3}

assert invert_dictionary(dict1) == {1: "a", 2: "b", 3: "c"}

raeq

import copy

original = {}
original["object1"] = dict({"a": {"b": [1, 2, 3]}})

dict_shallow = original.copy()
dict_deep = copy.deepcopy(original)

# change the mutable object in original and dict_shallow
original["object1"]["a"]["b"] = [3, 4, 5]

raeq

digits: dict = {i: chr(+i) for i in range(48, 58, 1)}
key = 50

try:
    val = digits.pop(key)
except KeyError:
    print (f"The item with key {key} did not exist.")
else:
    print(f"Deleted item with key {key} with value {val}.")

raeq

from collections import defaultdict as dd
import csv
import requests

url: str = "https://data.london.gov.uk/download/london-borough-profiles/c1693b82-68b1-44ee-beb2-3decf17dc1f8/london-borough-profiles.csv "

boroughs = (requests.get(url).text).split("\n")
reader = csv.DictReader(boroughs, dialect="excel")
dict1 = dd(dict)

raeq

from collections import defaultdict as dd
import requests
import csv
from pprint import pprint

url: str = "https://data.london.gov.uk/download/london-borough-profiles/c1693b82-68b1-44ee-beb2-3decf17dc1f8/london" "-borough-profiles.csv "

boroughs = (requests.get(url).text).split("\n")
reader = csv.DictReader(boroughs, dialect="excel")
dict1 = dd(dict)

raeq

from collections import defaultdict as dd

s = [("John", "Male", 25), ("Fred", "Female", 48), ("Sam", "Female", 41),
     ("Jane", "Female", 25)]

dict1 = dd(dict)

for name, gender, age in s:
    dict1[name]["age"] = age
    dict1[name]["gender"] = gender

raeq

from collections import defaultdict as dd

s = [("John", "Male"), ("John", "48"), ("John", "Married"), ("Jane", "Female"),
     ("Jane", "25")]

dict1: dict = dd(list)

for k, v in s:
    dict1[k].append(v)