Questions tagged [frozenset]
66 questions
0
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0 answers
How to get the string value from a frozenset that have two or more string values in Python?
import pandas as pd
from apyori import apriori
from collections import defaultdict
ds=pd.read_csv('event.csv',header=None)
num_records=len(ds)
print(num_records)
records=[]
for i in range(0,num_records):
records.append([str(ds.values[i,j])for j…
Mohamed Tawfeek
- 9
- 2
0
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0 answers
python : Get matched antecedents frozensets comparing with a list
I am trying to get matched antecedents frozensets by comparing with a list like below:
********** Edited *********
dataset = [['Milk', 'Onion', 'Nutmeg', 'Kidney Beans', 'Eggs', 'Yogurt'],
['Dill', 'Onion', 'Nutmeg', 'Kidney Beans',…
Sanjay Chintha
- 196
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- 15
0
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1 answer
How to extract the value from a frozen set that was converted to a string with python?
I am working on a python map/reduce in multiple parts.
My first map prints to the stdin so that the first reduce can pick it up.
The result of the map looks like this:
frozenset([4]) 14
The reduce reads in frozenset([4]) as the key, and 14 as the…
Kevin DeWire
- 3
- 1
0
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2 answers
Python create immutable object dynamically
I am trying to create an inmmutable object, specifically a frozenset, from a list after applying some function foo() to all of it's elements. That is to say:
my_list = ['a_1', 'a_2', ... , 'a_n']
given the list my_list, what i want to do is execute…
Biowav
- 90
- 5
0
votes
2 answers
Retrieve values from a frozen set dictionary (python)
I have a frozen set dictionary of the form:
{frozenset({12345, 3245}): 45.95948791503906,
frozenset({12345, 12804138}): 48.996036529541016,
frozenset({3245, 9876}): 50.67853927612305,
Is it possible for me to iterate over the values based on one…
Jerry George
- 71
- 7
0
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2 answers
Python: Membership testing way slower with frozenset than sets, tuples and lists?
I have been reading up for a few hours trying to understand membership testing and speeds as I fell down that rabbit hole. I thought I had gotten it until I ran my own little timeit test
Here's the code
range_ = range(20, -1, -1)
w =…
user1021085
- 671
- 3
- 10
- 26
0
votes
1 answer
Appending frozensets to a dictionary
I am working with a piece of code (written in python) that accepts an argument of the form:
restricted_bonds = {
frozenset((0, 10)),
frozenset((3, 14)),
frozenset((5, 6))
}
I have a tuple of the form:
tupl = ((0, 5, 6, 1), (4, 5, 6,…
Wychh
- 469
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- 11
0
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1 answer
Why is the Scipy instance of expon() returning type:
I am interested why the code below returns an instance type of rv_frozen when expon() is an instance of class expon_gen(rv_continuous) in the stats._continous_distns.py file.
Shouldn't it return type:…
Brian Wiley
- 397
- 5
- 20
0
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1 answer
How can I convert frozen sets of keys and values in dictionary to normal ones?
I have a dictionary of frozensets keys and values:
{(frozenset(['Age = 70', 'SMOK = y', 'LAD = 75']), frozenset(['CHOL = 220'])): 1.0, (frozenset(['AL = 0.0', 'DIAB = y', 'LAD = 75']), frozenset(['LM = 30'])): 1.0}
How can I convert it to a normal…
user91
- 347
- 4
- 13
0
votes
1 answer
Check if item of frozenset in list
I have a dataset which exist of a column with frozenset combinations.
Data
import pandas as pd
import numpy as np
d = {'ID1': [frozenset(['a', 'b']), frozenset(['a','c']), frozenset(['c','d'])]}
df = pd.DataFrame(data=d)
Furthermore, I have a list…
Tox
- 705
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0
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0 answers
If tuples perform better than lists, why do frozensets not perform better than sets?
I expected frozenset's to perform better than set's, because the former are immutable. When I looked it up though, answers simply said that sets and frozenset's simply contained many of the same implementations. What makes tuple's perform better…
Alec
- 6,521
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0
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0 answers
Looping through first 3 elements in a frozenset
How do i iter through first 3 elements in a frozen set.
frozen_set = frozenset(["e", "f", "g","h","i","j","k"])
for x in itertools.islice(frozen_set,1,3):
print(x)
J.J.
- 75
- 8
0
votes
1 answer
Frozenset to list yields wrong results
What I did is:
a = dataframe.antecedants
print(type(a[0]))
print(a[10])
b = a.tolist()
print(type(b[10]))
print(b[10])
c = [list(x) for x in a]
print(type(c[10]))
print(c[10])
I was trying to save my apriori dataframe to Elasticsearch, as this…
Aashish Gahlawat
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0
votes
2 answers
Check to see if frozen set is a subset of list and the index of every element that is a subset
I have a bunch of frozensets and they are all subsets of a list. What I want to find out is the position of each element of the frozen set in the list.
for e.g.:
a = frozenset([1])
b = frozenset([2, 3])
l = [1, 2, 3, 4]
Now I already know the…
Sayan Basu
- 43
- 4
0
votes
1 answer
Python Frozenset
I am using frozenset and I would like to avoid the output containing 'frozenset'. For example, I have
x = [frozenset([item]) for item in Set]
Output: frozenset(['yes']) => frozenset(['red', 'blue'])
Any ideas?
user3318660
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