CODEWITHSUNDEEP
pythonlist
user1762229
user1762229

Reputation: 71

python random in lists

This is my current code:

import random

while True:
    try:
        num   = int(input("Enter the total number of digits you want to generate:"))
        upper = int(input("Enter your highest number:"))
        lower = int(input("Enter your lowest number:"))

        if upper < 1 or lower < 1 or upper <= lower:
            print ("Sorry, invalid. Make sure your upper bound is higher than lower bound, make sure all numbers are integers greater than 0.")
            continue

        if num < 1:
            print ("Sorry, invalid. Try again.")
            continue

        **mylist = [0] * num
        for x in range (lower, upper):**

The part directly above here is the part that I am not quite sure how to go forward on. I want to generate random numbers depending on the number the user enters and within the upper and lower bounds that the user enters into a list that displays here. Can someone guide me through this? thank you! 

except:
    print ("Sorry, invalid. Try again.")

else:
    print ("Thank you.")
    break

Upvotes: 0

Views: 440

Answers (4)

Brenden Brown
Brenden Brown

Reputation: 3215

If you wanted a random subset of the numbers between lower and upper, inclusive, you could use:

random.sample(num, xrange(lower, upper + 1))

http://docs.python.org/2/library/random.html#random.sample

But I think you wanted duplicates to be possible, in which case use one of the other answers.

Upvotes: 0

Lars
Lars

Reputation: 1959

you probably need: 

print [random.randint(lower, upper) for n in range(num)]

which displays a list of num random integers with minimum lower and maximum upper (inclusive).

Upvotes: 1

Kartik
Kartik

Reputation: 9853

You can use the randint to generate numbers in the given range.

Return a random integer x such that a <= x <= b.

import random
print random.randint(a, b)

So to generate N numbers in the range a and b 

numbers = [random.randint(a, b) for i in range(N)]
print numbers

Upvotes: 0

mVChr
mVChr

Reputation: 50185

If you replace your ** lines with the following, using random.randint(lower, upper), you'll display the list you want:

mylist = []
for _ in range(num):
    mylist.append(random.randint(lower, upper))

print mylist

You could also do this with a list comprehension:

mylist = [random.randint(lower, upper) for _ in range(num)]
print mylist

Upvotes: 2

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