please explain the line from this little program

[jon ninpoja]

num = int(input("Please choose a number to divide: "))

listRange = list(range(1,num+1))

divisorList = []

for number in listRange:
    if num % number == 0:
        divisorList.append(number)

print(divisorList)

in this line

listRange = list(range(1,num+1))

is list a keyword? i dont really understand this lines function

thanks

[Jeanne Boyarsky]

This isn't Java. What language is it? (I guessed Python and moved it to the Python forum)

[Jeanne Boyarsky]

range() is Python. But you can loop through the result directly so no reason to cast it to list().

[Sagar S Solanki]

A list is basically a data structure in python. When you use range(1,11) it returns a list of numbers from 1 to 10 however, in order to store them as a list, list() is used. Think of it as a casting method.
Just like you cast datatype from one to other(Say int to float).
>>> listRange = range(1,11)  #Without using list()
>>> print(listRange)
       range(1, 11)
>>> listRange = list(range(1,11))  #Converting to list using list()
>>> print(listRange)
       [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

Hope it helps. Let me know if you have any questions.

[Campbell Ritchie]

Welcome to the Ranch and thank you for answering that question.

[Rob Spoor]

In Python 3, range returns a range literal. That probably doesn't say a lot, but you can consider it as an iterator or stream. It doesn't store the entire sequence of numbers in the range. (In Python 2, xrange is the Python 3 range equivalent; Python 2's range does store the numbers.) When putting this in a list it will create a list with the same elements.

If you only want to iterate over the range, you shouldn't use list because that only requires more memory. Only turn it into a list if you actually need it to be a list.