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Python: Create 12 fixed dates from a specified date over a given period

Python Datetime: Exercise-27 with Solution

Write a Python program to create 12 fixed dates from a specified date over a given period. The difference between two dates will be 20.

Sample Solution:

Python Code:

import datetime
def every_20_days(date):
    print('Starting Date: {d}'.format(d=date))
    print("Next 12 days :")
    for _ in range(12):
        date=date+datetime.timedelta(days=20)
        print('{d}'.format(d=date))

dt = datetime.date(2016,8,1)
every_20_days(dt)

Sample Output:

Starting Date: 2016-08-01                                                                                     
Next 12 days :                                                                                                
2016-08-21                                                                                                    
2016-09-10                                                                                                    
2016-09-30                                                                                                    
2016-10-20                                                                                                    
2016-11-09                                                                                                    
2016-11-29                                                                                                    
2016-12-19                                                                                                    
2017-01-08                                                                                                    
2017-01-28                                                                                                    
2017-02-17                                                                                                    
2017-03-09                                                                                                    
2017-03-29                 

Flowchart:

Flowchart: Create 12 fixed dates from a specified date over a given period.

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Previous: Write a Python program calculates the date six months from the current date using the datetime module.
Next: Write a Python program to get the dates 30 days before and after from the current date.

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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