How to print mean , median and mode in python 3

Question

I am new to python programming and I'm getting runtime error with my code. Any help is appreciated.

import statistics

tc = int(input())

while tc > 0:
    n = int(input())
    arr = input()
    l = list(map(int, arr.split(' ')))
    print("{} {} {}".format(statistics.mean(l), statistics.median(l), statistics.mode(l)))
    tc = tc - 1

Error

StatisticsError: no unique mode; found 2 equally common values

Input Format

First line consists of a single integer T denoting the number of test cases. First line of each test case consists of a single integer N denoting the size of the array. Following line consists of N space-separated integers Ai denoting the elements in the array.

Output Format

For each test case, output a single line containing three-separated integers denoting the Mean, Median and Mode of the array

Sample Input

1
5
1 1 2 3 3

Sample Output

2 2 1

`StatisticsError: no unique mode; found 2 equally common values` — cs95, Jul 12 '17 at 13:40
@cᴏʟᴅsᴘᴇᴇᴅ Thanks. I edited the error into the question. — Christian Dean, Jul 12 '17 at 13:43
This is not a bug but a feuture of the `statistics.mode` function — Ludisposed, Jul 12 '17 at 13:49
@flevinkelming , I mentioned , i am getting Runtime Error (http://ideone.com/QAubql) — Kartik Madaan, Jul 13 '17 at 09:55

score 2 · Accepted Answer · answered Jul 12 '17 at 13:49

2

You could add a variable mode surrounded by a try...except and if statistics has an error get the mode a different way.

try:
  mode=statistics.mode(l)
except:
  mode=max(set(l),key=l.count)
print("{} {} {}".format(statistics.mean(l), statistics.median(l), mode))

answered Jul 12 '17 at 13:49

depperm

10,606
4
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67

1

@KartikMadaan ....you put the try...except in the `while` loop, `l` isn't defined outside of the loop otherwise – depperm Jul 13 '17 at 12:09

Mayur Vora · Answer 2 · 2017-07-13T11:03:39.163

0

Hello Kartik Madaan,

Try this code,

Using Python 3.X

import statistics
from statistics import mean,median,mode

tc = int(input())

while tc > 0:
    n = int(input())
    arr = input()
    l = list(map(int,arr.split()))
    mod = max(set(l), key=l.count)
    print(int(mean(l)),int(median(l)),mod)
    tc = tc - 1

I hope my answer is helpful.
If any query so comment please.

edited Jul 13 '17 at 11:03

answered Jul 12 '17 at 13:59

Mayur Vora

922
2
14
25

Hello kartik what you say i don't understand? – Mayur Vora Jul 13 '17 at 10:12
Your code gives a Compilation Error : The errors are removed in the above link – Kartik Madaan Jul 13 '17 at 10:13
wait one minute? – Mayur Vora Jul 13 '17 at 10:14
you use wrong code in ==>ideone. please run my above code. – Mayur Vora Jul 13 '17 at 10:18
Invalid syntax of Print statement gives error and instead of raw_input() , you should use input() – Kartik Madaan Jul 13 '17 at 10:22
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/149104/discussion-between-er-ceo-vora-mayur-and-kartik-madaan). – Mayur Vora Jul 13 '17 at 10:22
hello kartik because online editor support python 3 so raw_input() not work if you use python 2 so it's work fine – Mayur Vora Jul 13 '17 at 10:32
Python 2 does not have statistics library – Kartik Madaan Jul 13 '17 at 10:46