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Python Math: Create the fraction instances of decimal numbers

Python Math: Exercise-45 with Solution

Write a Python program to create the fraction instances of decimal numbers.

Sample Solution:-

Python Code:

import decimal
import fractions
values = [
    decimal.Decimal('0.2'),
    decimal.Decimal('0.7'),
    decimal.Decimal('2.5'),
    decimal.Decimal('3.0'),
]

for d in values:
    print('{} = {}'.format(d, fractions.Fraction(d)))

Sample Output: 

0.2 = 1/5                                                                                                     
                                                                                                              
0.7 = 7/10                                                                                                    
                                                                                                              
2.5 = 5/2                                                                                                     
                                                                                                              
3.0 = 3

Flowchart:

Flowchart: Create the fraction instances of decimal numbers

Python Code Editor:

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Previous: Write a Python program to create the fraction instances of float numbers.
Next: Write a Python program to add, subtract, multiply and divide two fractions.

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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