﻿ Python: Find the second largest number in a list - w3resource

# Python: Find the second largest number in a list

## Python List: Exercise - 28 with Solution

Write a Python program to find the second largest number in a list.

Example - 1 : Example - 2 : Example - 3 : Example - 4 : Sample Solution:-

Python Code:

``````def second_largest(numbers):
if (len(numbers)<2):
return
if ((len(numbers)==2)  and (numbers == numbers) ):
return
dup_items = set()
uniq_items = []
for x in numbers:
if x not in dup_items:
uniq_items.append(x)
uniq_items.sort()
return  uniq_items[-2]
print(second_largest([1,2,3,4,4]))
print(second_largest([1, 1, 1, 0, 0, 0, 2, -2, -2]))
print(second_largest([2,2]))
print(second_largest())
```
```

Sample Output:

```3
1
None
None
```

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