dictionary_comprehension.py

import uuid
import random
import string

# GENERATE SAMPLE DATA
sample_data = [{
    '_id': uuid.uuid4().hex,
     'name': ''.join(random.choices(
         [_ for _ in string.ascii_letters],
         k=10
     )),
    'net_worth': random.randint(10,100)*1000
} for i in range(1000)]


random_entry = random.choice(sample_data)
print(random_entry)

# BUILD THE HASH_TABLE
hash_table = {
    _['_id']:_
    for _ in sample_data
}

# CHANGE ENTRY VIA '_id'
hash_table[random_entry['_id']]['net_worth'] = 10000
print(random_entry)