lifetimes | Lifetime value in Python | Analytics library
kandi X-RAY | lifetimes Summary
kandi X-RAY | lifetimes Summary
Lifetimes can be used to analyze your users based on a few assumption:. I've quoted "alive" and "die" as these are the most abstract terms: feel free to use your own definition of "alive" and "die" (they are used similarly to "birth" and "death" in survival analysis). Whenever we have individuals repeating occurrences, we can use Lifetimes to help understand user behaviour.
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Top functions reviewed by kandi - BETA
- Compute expected cumulative sum of expected transactions .
- Extract and holdout data from a transaction .
- Return summary data from transactions .
- r Compute conditional probability of n purchases .
- Estimate the Gaussian model .
- Plot the expected cumulative transactions .
- Plot the expected cumulative sum of expected transactions .
- Find the first transactions for a given customer .
- Plot the frequency recency matrix .
- Generate a model for modified beta .
lifetimes Key Features
lifetimes Examples and Code Snippets
Lines of Code : 3License : Permissive (Apache-2.0)
CopyProvider(..., id_token_lifetime=600)
AuthorizationState(..., authorization_code_lifetime=300, access_token_lifetime=60*60*24,
refresh_token_lifetime=60*60*24*365, refresh_token_threshold=None)
def analyze_step_stats(self,
show_dataflow=True,
show_memory=True,
op_time='schedule'):
"""Analyze the step stats and format it into Chrome Trace Format.
Args:
def generate_chrome_trace_format(self,
show_dataflow=True,
show_memory=False,
op_time='schedule'):
"""Produces a trace in Chrome Trace Format # testUI.py
from tkinter import *
from test2 import nameit
root = Tk()
root.title('Scott Window')
root.geometry('500x350')
greet = nameit('John')
mylabel = Label(root, text=greet)
mylabel.pack(pady=20)
root.mainloop()
class Collectible:
def __init__(self, name):
self.name = name
def __del__(self, print=print):
print("Collecting", self.name)
def inner():
local_name = Collectible("inner local value")
raise RuntimeError("Th>>> # / / first a[:]
>>> # v v v v second a[:]
>>> id(a[:]) == id(a[:])
True
>>> b = a[:] # < ------------- first a[:]
>>> id(b) == id(a[:]) #class a:
pass
my_a = a()
print(id(my_a))
my_a = a()
print(id(my_a))
my_a = a()
print(id(my_a))
139647922983888
139647922986768
139647922983888
class AnotherClass:
def __init__(self):
self.db = MySQL()
def __enter__(self):
self.db.__enter__()
return self
def __exit__(self, *exc_args):
return self.db.__exit__(*exc_args)
def do_stuff(sid(a) in map(id, [b, c])
>>> id([]) in map(id, [[], []])
True
d = {'life':[keys_list],'frequency':[val_list]}
d = {'life':keys_list,'frequency':val_list}
df = pd.DataFrame(dict_fre.items(), columns=['life', 'frequency'])
from Community Discussions
Trending Discussions on lifetimes
QUESTION
This code won't compile because rust requires a lifetime to be added.
...ANSWER
Answered 2022-Apr-03 at 03:33Lifetimes are part of type itself
In your first example, you are specifying same i.e 'a to all of x, y and return value. If you were receiving single value as reference you wont have to pass lifetime specifier right?
QUESTION
I have two traits Foo and Bar:
ANSWER
Answered 2022-Feb-23 at 07:36TL/DR: You need to use dyn Bar + 'a instead of plain dyn Bar:
QUESTION
Here is my snippet:
...ANSWER
Answered 2022-Feb-19 at 09:11A &str is a string slice that refers to data held elsewhere. In the case of a string literal, you have a &'static str which is a reference to data held in the binary itself. Otherwise, you typically produce a &str by taking a slice of an existing String.
If you are generating a new string at runtime, the most straightforward way is to make a String. You can then dispense slices (&str) from it, but the String value must itself live at least as long as the slices. &phrase.replace("-", "") doesn't work here because you're taking a slice of a temporary -- a value that only lives as long as the statement it's part of. After the end of this statement, the temporary String returned by the replace method is dropped and phrase would refer to a slice that points into a string that no longer exists, and the borrow checker is correctly pointing out that this is not memory-safe. It would be like returning a reference to a value held in a local variable within the same function.
However, what you're doing here isn't even shadowing, you're just trying to reassign a variable from an incompatible type. Shadowing the name phrase with a new variable of the same name will allow the new name to have a different type (such as String), so this would be valid:
QUESTION
I'm trying to write a method on a struct that returns a closure. This closure should take a &[u8] with an arbitrary lifetime 'inner as an argument and return the same type, &'inner [u8]. To perform its function, the closure also needs a (shared) reference to a member of the struct &self. Here is my code:
ANSWER
Answered 2022-Feb-12 at 01:57The problem is here:
QUESTION
Suppose you have two collections (Vec for simplicity here) of instances of T, and a function to compute whether the elements in those collections appear in either or both of them:
ANSWER
Answered 2021-Dec-19 at 20:09Yes, it is sound. In fact, the official documentation for transmute() says it can be used to extend lifetimes:
https://doc.rust-lang.org/stable/std/mem/fn.transmute.html#examples
Extending a lifetime, or shortening an invariant lifetime. This is advanced, very unsafe Rust!
QUESTION
I'm getting
error[E0373]: closure may outlive the current function, but it borrows
row_nr, which is owned by the current function
I would not expect this, since row_nr is a u32, so I'd expect it to be copied rather than moved:
ANSWER
Answered 2021-Dec-09 at 10:41I would not expect this, since
row_nris au32, so I'd expect it to be copied rather than moved
This expectation is correct, assuming it were moved in the first place. In this case it's not moved, it's borrowed, because by default closures borrow values from their environment. To request a move, which will for u32 indeed result in a copy, you need to use the move keyword explicitly.
As you discovered, when you just use move, you also move values, which doesn't compile and is anyway not what you want. The standard Rust idiom to move only one value into the closure is to use move and explicitly borrow the captured variables you don't want moved (in yout case values). For example, this compiles:
QUESTION
What is the preferred way to make a VS connected service (NSwag) injected into classes/controllers. I have found a lot of suggestions on the net to use this form:
...ANSWER
Answered 2021-Sep-26 at 13:24Ok, I actually solved this problem by poking around through OpenApiReference, but it requires manual modification of csproj file. Additional Options node has to be added to OpenApiReference item group, to instruct NSwag to NOT expose BaseUrl and to also generate an interface, which eases the work with setting up DI without additional code.
Visual Studio team should really add these two checkboxes to Connected Services screens/configuration for OpenAPI.
QUESTION
I have a little dummy parser, which uses the same &str during parsing:
...ANSWER
Answered 2021-Dec-02 at 14:54By using &'a self, you're conflating the lifetime of the parser with the lifetime of the string it refers to. There's no reason for that.
If you remove this constraint, there's no problem anymore:
QUESTION
I have the following code
...ANSWER
Answered 2021-Aug-09 at 07:18Sometimes you can get a better error from the nightly compiler:
QUESTION
I'm trying to learn Rust's ownership and lifetimes in more detail, and I'm very confused by this piece of code:
...ANSWER
Answered 2021-Oct-12 at 19:07In the end you do not hold a mut reference more than once,in x = value the reference is moved into x. It would be different if that line was first in the loop:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install lifetimes
You can use lifetimes like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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