Software Engineering

# How to Remove Trailing Zeroes in Python

## The challenge#

Numbers ending with zeros are boring.

They might be fun in your world, but not here.

Get rid of them. Only the ending ones.

``````1450 -> 145
960000 -> 96
1050 -> 105
-1050 -> -105
``````

## The solution in Python code#

Option 1:

``````def no_boring_zeros(n):
n = str(n)
for i in range(len(n)-1, 0, -1):
if n[i]=="0":
n = n[:-1:]
else:
return int(n)
return int(n)
``````

Option 2:

``````def no_boring_zeros(n):
try:
return int(str(n).rstrip('0'))
except ValueError:
return 0
``````

Option 3:

``````def no_boring_zeros(n):
return int(str(n).rstrip("0")) if n else n
``````

## Test cases to validate our solution#

``````import test
from solution import no_boring_zeros

@test.describe("Fixed Tests")
def fixed_tests():
@test.it('Basic Test Cases')
def basic_test_cases():
test.assert_equals(no_boring_zeros(1450), 145)
test.assert_equals(no_boring_zeros(960000), 96)
test.assert_equals(no_boring_zeros(1050), 105)
test.assert_equals(no_boring_zeros(-1050), -105)
test.assert_equals(no_boring_zeros(0), 0)
test.assert_equals(no_boring_zeros(2016), 2016)
``````