# Python Program to find Smallest Number in a List

Write a Python Program to find the Smallest Number in a List using the min function, for loop, and sort function with a practical example. The min() function returns the least value, the sort() function sorts the list in ascending order, and the first value will be the least.

## Python Program to find the Smallest Number in a List using min

In this example, we declared a list of random integer values. The min function returns the minimum value in a List.

```a = [10, 50, 60, 80, 20, 15]

print(min(a))```
``10``

This Python program is the same as above. But this time, we are allowing the user to enter the length of a List. Next, we used For Loop to add numbers to the Python list.

```NumList = []
Number = int(input("Please enter the Total Number of List Elements: "))
for i in range(1, Number + 1):
value = int(input("Please enter the Value of %d Element : " %i))
NumList.append(value)

print("The Smallest Element in this List is : ", min(NumList))```

### Python Program to find the Smallest Number in a List using the sort function

The sort function sorts List elements in ascending order. Next, we are using Index position 0 to print the first element in a List.

```a = [100, 50, 60, 80, 20, 15]

a.sort()
print(a[0])```
``20``

This list’s smallest number is the same as above. But this time, we allow users to enter their list items.

```NumList = []
Number = int(input("Please enter the Total Number of List Elements: "))
for i in range(1, Number + 1):
value = int(input("Please enter the Value of %d Element : " %i))
NumList.append(value)

NumList.sort()
print("The Smallest Element in this List is : ", NumList[0])```

## Python Program to find the Smallest Number in a List using for loop

In this program, we are not using any built-in function such as the sort or min function.

```NumList = []
Number = int(input("Please enter the Total Number of List Elements: "))
for i in range(1, Number + 1):
value = int(input("Please enter the Value of %d Element : " %i))
NumList.append(value)

smallest = NumList[0]
for j in range(1, Number):
if(smallest > NumList[j]):
smallest = NumList[j]
position = j

print("The Smallest Element in this List is : ", smallest)
print("The Index position of the Smallest Element is : ", position)```

From the above Python Program to find the Smallest Number in a List example, the User inserted values are
NumList[5] = {223, 43, 22, 67, 54}
smallest = NumList[0] = 223

First Iteration – for 1 in range(1, 5) – Condition is true. So, it executes the If statement inside the loop until the condition fails.

if (smallest > NumList[j]) inside the for loop is True because (223 > 43)
smallest = NumList[1] => 43
position = 1

Second Iteration: for 2 in range(1, 5) – Condition is true
If (smallest > NumList[2])  =  (43 > 22) – Condition True
smallest = NumList[2] => 22
Position = 2

Third Iteration: for 3 in range(1, 5) – Condition is true
If (smallest > NumList[3])  =  (22 > 67) – Condition False
smallest = 22
Position = 2

Fourth Iteration: for 4 in range(1, 5) – Condition is true
If (22 > 54) – Condition False
smallest = 22
Position = 2

Fifth Iteration: for 5 in range(1, 5) – Condition is False. So, it exits from the loop.

If you want the while loop code, replace the for loop with the below code.

```j = 1
while j < Number:
if(smallest > NumList[j]):
smallest = NumList[j]
position = j
j = j + 1```