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Python Math: Display the fraction instances of the string representation of a number

Python Math: Exercise-43 with Solution

Write a Python program to display the fraction instances of the string representation of a number.

Sample Solution:-

Python Code:

import fractions

for s in ['0.7', '2.5', '9.32', '7e-1']:
    f = fractions.Fraction(s)
    print('{0:>4} = {1}'.format(s, f))

Sample Output: 

 0.7 = 7/10                                                                                                   
                                                                                                              
 2.5 = 5/2                                                                                                    
                                                                                                              
9.32 = 233/25                                                                                                 
                                                                                                              
7e-1 = 7/10

Flowchart:

Flowchart: Display the fraction instances of string representation of number

Python Code Editor:

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Previous: Write a Python program to get the local and default precision.
Next: Write a Python program to create the fraction instances of float numbers.

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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