uuid

Django model with uuid5 primary key Question: I have a problem to define Django model where the Primary Key is UUID5 that base on model fields. Here is what I have got already. class Place(models.Model): uuid = models.UUIDField(primary_key=True, default=uuid.uuid5(‘PLACE_UUID_NAMESPACE’, ‘{}{}{}’.format(self.city, self.zip, self.country))) city = models.CharField(max_length=24, blank=True, null=True) zip = models.CharField(max_length=6, blank=True, null=True) country = CountryField(default=’US’) …

Insert different UUID on each row of a large table by python Question: 15 I have a table with ~80k rows with imported data. Table structure is as follows: order_line_items id order_id product_id quantity price uuid On import, the order_id, product_id, quantity, and price were imported, but the uuid field was left null. Is there …

How to convert a byte type data to UUID in python Question: I am reading the UUID from my board as b"x93S4E2x8dx9ex8fxe9x11xc1zxd0Ux95’" How to convert or format this to obtain a 128-bit UUID that reads [279555d0-7ac1-11e9-8f93-8d3245345393] Asked By: Quest03 || Source Answers: The Python UUID library will normally cover most of the situations that you …

Should an application check for UUID v4 duplicated? Question: I work in my app with a database. This database stores data with a randomly generated ID of the type UUID v4. Now I’m wondering, how common is it for a big (let’s be optimistic 😀 ) app with many users to have a duplicate ID? …

generate int from a uuid Question: I would like to generate a "random" int from a given uuid. All I care about is that given the uuid, I will always get the same int. I’m aware that the range of uuids is much largers than the range of ints in python, so I’m taking the …

How to insert hyphens into a UUID string? Question: I want to create a function that adds a – on position 8, 12, 16, 20 of a UUID string. Example: Original: 76684739331d422cb93e5057c112b637 New: 76684739-331d-422c-b93e-5057c112b637 I have no clue on how to position it on multiple positions in a string that wouldn’t look like spaghetti code. …

How to check UUID validity in Python? Question: I have a string that should be a UUID. Is there any built-in Python function available to check whether the UUID is valid or not, and to check its version? Asked By: Karma Yogi || Source Answers: I found this question while I was looking for a …

Add uuid to a new column in a pandas DataFrame Question: I’m looking to add a uuid for every row in a single new column in a pandas DataFrame. This obviously fills the column with the same uuid: import uuid import pandas as pd import numpy as np df = pd.DataFrame(np.random.randn(4,3), columns=list(‘abc’), index=[‘apple’, ‘banana’, ‘cherry’, …

Safest way to generate a unique hash in Python Question: I need to produce unique identifiers that can be used in filenames and can be reproduced given the same input values. I need to produce millions of these identifiers as the source input has millions of combinations. For simplicity’s sake, I will use a small …

How to generate a random UUID which is reproducible (with a seed) in Python Question: The uuid4() function of Python’s module uuid generates a random UUID, and seems to generate a different one every time: In [1]: import uuid In [2]: uuid.uuid4() Out[2]: UUID(‘f6c9ad6c-eea0-4049-a7c5-56253bc3e9c0’) In [3]: uuid.uuid4() Out[3]: UUID(‘2fc1b6f9-9052-4564-9be0-777e790af58f’) I would like to be able …