CODEWITHSUNDEEP
pythonalgorithmlistquantile
Laycho
Laycho

Reputation: 13

List Python Quantile

I'm making a Quantile problems and I need to do something like this

Intervals:

150-155
155-160
160-165
165-170
170-175
175-180
180-185

>> inferior_limit = 150
>> superior_limit = 185
>> range = inferior_limit - superior_limit
>> number_of_intervals = 5

Those are the variables and I need that because I'm doing a table's interval 

>> width = range/number_of_intervals
>> while inferior_limit <= superior_limit
# there is my problem
>> inferior_limit += width
>> print inferior_limit

Upvotes: 1

Views: 634

Answers (2)

jamylak
jamylak

Reputation: 133574

>>> start, stop, step = 150, 185, 5
>>> r = range(start, stop + 1, step) # You can use xrange on py 2 for greater efficiency
>>> for x, y in zip(r, r[1:]):
        print '{0}-{1}'.format(x, y)


150-155
155-160
160-165
165-170
170-175
175-180
180-185

A more efficient way of doing this is through the use of the itertools pairwise recipe. 

from itertools import tee, izip
def pairwise(iterable):
    "s -> (s0,s1), (s1,s2), (s2, s3), ..."
    a, b = tee(iterable)
    next(b, None)
    return izip(a, b)

for x, y in pairwise(r):
    print '{0}-{1}'.format(x, y)

Also just for fun here is a solution using itertools.starmap, since nobody ever uses it!

from itertools import starmap
print '\n'.join(starmap('{0}-{1}'.format, pairwise(r)))

Upvotes: 1

wim
wim

Reputation: 362786

Is this what you meant?

>>> inf, sup, delta = 150, 185, 5
>>> print '\n'.join('{}-{}'.format(x, x + delta) for x in xrange(inf, sup, delta))
150-155
155-160
160-165
165-170
170-175
175-180
180-185

Upvotes: 2

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