Print all Negative Numbers in a Range Python (original) (raw)

Last Updated : 11 Jul, 2025

We are given a range we need to print all negative number within specific range. For example, we are given start and end point start, end = -5, 0 we need to print all numbers so that output should be -5 -4 -3 -2 -1.

Using a loop

We can use a loop to iterate through a given range and check if each number is negative. If number is negative it gets printed inside loop.

Python `

start, end = -5, 0
for i in range(start, end + 1):
if i < 0: # Check if the number is negative print(i)

`

**Explanation:

Using list comprehension

We can use list comprehension to generate a list of negative numbers within the specified range by iterating through range and filtering values less than 0.

Python `

start, end = -10, 0

List comprehension to generate a list of negative numbers within the range

n = [i for i in range(start, end + 1) if i < 0]
print(n)

`

Output

[-10, -9, -8, -7, -6, -5, -4, -3, -2, -1]

**Explanation: List comprehension iterates through the range from -10 to 0 and includes only numbers less than 0.

Using filter()

We can use filter() to apply a condition (i < 0) to range of numbers returning only negative numbers.

Python `

start, end = -10, 0 e

Use filter() to keep only negative numbers from range and convert result to a list

n = list(filter(lambda x: x < 0, range(start, end + 1)))

print(n)

`

Output

[-10, -9, -8, -7, -6, -5, -4, -3, -2, -1]

**Explanation: filter() function applies a lambda function (lambda x: x < 0) to each element in the range from -10 to 0, keeping only negative numbers.

Using map()

We can use map() to iterate over the range and apply a lambda function that checks if each number is negative then filter out non-negative values.

Python `

start, end = -10, 0
n = list(map(lambda x: x if x < 0 else None, range(start, end + 1)))

Use list comprehension to remove None values (non-negative numbers)

n = [num for num in n if num is not None]
print(n)

`

Output

[-10, -9, -8, -7, -6, -5, -4, -3, -2, -1]

**Explanation: