Python: Configure the rounding to round to the nearest - with ties going towards 0, with ties going away from 0

Last update on April 02 2025 12:31:43 (UTC/GMT +8 hours)

5. Rounding with Tie-Breaking Rules

Write a Python program that can be configured to round to the nearest - with ties going towards 0 and ties going away from 0. Use decimal.ROUND_HALF_DOWN, decimal.ROUND_HALF_UP

Sample Solution:

Python Code:

import decimal
print("Configure the rounding to round to the nearest, with ties going towards 0:")
decimal.getcontext().prec = 1
decimal.getcontext().rounding = decimal.ROUND_HALF_DOWN
print(decimal.Decimal(10) / decimal.Decimal(4))
print("\nConfigure the rounding to round to the nearest, with ties going away from 0:")
decimal.getcontext().prec = 1
decimal.getcontext().rounding = decimal.ROUND_HALF_UP
print(decimal.Decimal(10) / decimal.Decimal(4))

Sample Output:

Configure the rounding to round to the nearest, with ties going towards 0:
2

Configure the rounding to round to the nearest, with ties going away from 0:
3

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to round a Decimal value using both ROUND_HALF_DOWN and ROUND_HALF_UP modes, and then print the two results side by side.
• Write a Python function that takes a Decimal and applies tie-breaking rounding (half down and half up) to show the difference when the value is exactly halfway between two multiples.
• Write a Python script to generate a list of Decimal values with midpoints and round them using both ROUND_HALF_DOWN and ROUND_HALF_UP, then output the results in a comparison table.
• Write a Python program to demonstrate the effect of tie-breaking rules on Decimal values by rounding a series of midpoints using both rounding modes.

Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to configure the rounding to round to the floor, ceiling.
Next: Write a Python program to configure the rounding to round to the nearest, with ties going to the nearest even integer.