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

Python module: Exercise-5 with Solution

Write a Python program to configure the rounding to round to the nearest - with ties going towards 0, with 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:

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

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Python Code Editor:

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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.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m