CODEWITHSUNDEEP
pythoncomputer-visiongroupingocrdistribution
Aparajit Garg
Aparajit Garg

Reputation: 41

How to dynamically provide the size of a list in python and how to distribute the values in a specified range in python?

I have a user to input list values which can be anything like 1 0.95 0.9 0.7 0.6 The numbers will be in decreasing order always and the numbers below 0.6 will always be considered as less than 0.6. Now I have a list of values ranging from 0-1 some 35 values and I need to divide the values in these categories.

I am having no idea on how to proceed with it, since the user can give any number of values from 0.6-1.0

I tried finding how many values are there greater than 0.6 but then don't know what to do further in order to divide the list of different values in the corresponding ranges.

This is the code I have tried to identify how many values are greater than 0.6, is there 0.6 and how many values are less than 0.6, given by the user.

greater = 0
equal = 0
lower = 0
for i in args['range']:
    if i > 0.6:
        greater += 1
    elif i == 0.6:
        equal += 1
    else:
        lower += 1

suppose there is a list of numbers n = [0.0, 0.2, 0.4, 0.2, 0.8, 0.7, 0.1, 0.3, 0.5]

and the user has given values like: 1 0.99 0.8 0.6 0.4

Now, the program should distribute the values such as 

values_equal_to_1 = 0
values_between_0.99_and_0.8 = 1
values_between_0.6_and_0.8 = 1
values_less_than_0.6 = 7

Upvotes: 0

Views: 312

Answers (2)

Chris
Chris

Reputation: 29742

Using numpy.searchsorted and collections.Counter:

import numpy as np
from collections import Counter

user_input = '1 0.99 0.8 0.6 0.4'
intv = sorted([float(i) for i in user_input.split() if float(i) >=0.6])
# [0.6, 0.8, 0.99, 1.0]

n = [0.0, 0.2, 0.4, 0.2, 0.8, 0.7, 0.1, 0.3, 0.5]
d = Counter(np.searchsorted(sorted(intv), n, 'right'))

Output of d:

Counter({0: 7, 1: 1, 2: 1})

You can then make some representation such as :

{'values less than or equal to %s' % i: d.get(n,0) for n, i in 
enumerate(sorted(intv))}

Output:

{'values less than or equal to 0.6': 7,
 'values less than or equal to 0.8': 1,
 'values less than or equal to 0.99': 1,
 'values less than or equal to 1.0': 0}

Upvotes: 0

Alec
Alec

Reputation: 9575

Just use list comprehensions:

values_equal_to_1 = len([x for x in list if x == 1])
values_between_99_and_8 = len([x for x in list if .8 < x < .99])
values_between_6_and_8 = len([x for x in list if .6 < x < .8])
values_less_than_6 = len([x for x in list if x < .6])

list is the list of values the user enters. Don't actually name it list as that will override built-ins

Upvotes: 0

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