how to make a random list in python3

Question

i just want make a list to display students scores and different course have different scores ,the scores comes from.random randint(70,100), like this:

[{'C++':70,'Math':80,'Python':90},
{'C++':87,'Math':82,'Python':91},...]

import random
def makedict(spam):
    a=[]
    for j in range(20):             
        for i in spam:
        a[j].setdefault(i,random.randint(70,90))
    return a
if __name__=="__main__":
    cou=['C++','Math',Python]
    res=makedict(cou)

IndexError: list index out of range how i change the code

use a.append instead of indexing

juanpa.arrivillaga
– juanpa.arrivillaga

2016-10-21 06:11:03 +00:00
Commented Oct 21, 2016 at 6:11 — juanpa.arrivillaga
– juanpa.arrivillaga, Commented Oct 21, 2016 at 6:11

Dror Hilman · Accepted Answer · 2016-10-21 06:10:39Z

2

use dictionary comprehension

import random
def makedict(subjects):
    return {s: random.randint(70,100) for s in subjects}

if __name__=="__main__":
    cou=['C++','Math','Python']
    res=makedict(cou)

answered Oct 21, 2016 at 6:10

Dror Hilman

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1 Comment

maisui童鞋 Over a year ago

i want to make more than one dictionary,so your answer is also good if add a loop

David · Accepted Answer · 2016-10-21 06:21:09Z

0

Try this, You have to use append.

import random
def makedict(spam):
    result = []
    for _ in range(20):
        result.append({j:random.randint(70,90) for j in spam})
    return result

if __name__=="__main__":
    cou=['C++','Math', 'Python']
    res=makedict(cou)

edited Oct 21, 2016 at 6:21

David

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answered Oct 21, 2016 at 6:11

Rahul K P

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1 Comment

maisui童鞋 Over a year ago

i also use append,but i don't know {j:random.randint(70,90) for j in spam},so it's good for me to learn

Jerome Anthony · Accepted Answer · 2016-10-21 06:14:32Z

0

Your indentation for the second for..loop is wrong. Fix it and it will work.

answered Oct 21, 2016 at 6:14

Jerome Anthony

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