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range object - nikosxatz - Dec-11-2018
1. Is range object a collection (container) or just a sequence?
2. Is range object a generator?
Thanks
RE: range object - wavic - Dec-11-2018
Neither.
>>> obj = range(5) >>> type(obj) <class 'range'> >>>It's a some kind of iterator.
I came across this months ago. You may find it interesting to read.
RE: range object - buran - Dec-11-2018
>>> some_range = range(10) >>> type(some_range) <class 'range'> >>> import collections.abc >>> isinstance(some_range, collections.abc.Sequence) True >>> isinstance(some_range, collections.abc.Container) True >>> isinstance(some_range, collections.abc.Generator) False >>>
RE: range object - DeaD_EyE - Dec-11-2018
The range object is very handy.
r = range(-100, 255, 2)
# you can reuse the range object
list(r) == list(r)
for i in r:
for j in r:
pass
# member testing is supported
42 in r
-100 in r
# Access an area
r[0:10] # > returns a new range object, which fit's to the selected area of the origin
# IndexAccess
r[1] # > returns the second element
# using built-in functions on range object
sum(r)
min(r)
max(r)
import math
import operator
from functools import reduce
math.factorial(10) == reduce(operator.mul, range(1,10+1))Read the provided link posted by wavic.