有没有办法从随机数中找到最大的数？

Question

i am writing a code to find the max and min number from a python list. if i provide numbers in list it is easy to get output, but i want to get output from random numbers, how to do it.

i have tried using max() but it does not work with random numbers

import random
list = []
print (len(list))
for i in range(1,10):
    print (random.randint(100,200))
for num in list:
     list = [random]
     print (list)

also i have tried using

index = list.index(max(list))
print ('index of max is ', index)

this works if i provide the numbers, but not with random.

the output of both max and min is same.

Answer 1

You are not filling your list with numbers, you are just printing them. Your list is actually empty.

Try this:

import random

list_ = [random.randint(100,200) for _ in range(10)]
print(list_)
print(max(list_))

PS Don't name variables equal to the keywords, like list , dict etc. It is very bad idea that can lead to various errors.

Answer 2

First you need to populate the list, and later find the minimum and maximum values:

import random

lst = []
for i in range(1, 10):
    lst.append(random.randint(100, 200))

print(max(lst))
print(min(lst))

Notice that it's more idiomatic to use a list comprehension, as shown in @vurmux's answer.

Answer 3

print (len(list)) //It will always print 0. Because list is empty at this time. You need to populate it with random numbers.

Also it is not a good practice to use Python Keywords as name of lists,sets,variables etc. It could raise errors. You have used list which a constructor for creating lists.

Here's what you need to do:-

import random
numlist = []

for i in range(1,10):
     numlist.append(random.randint(100,200))

print(max(numlist))
print(min(numlist))

Read about max here :- https://docs.python.org/3/library/functions.html#max