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Python: Calculate number of days between two dates

Python Basic: Exercise-14 with Solution

Write a Python program to calculate number of days between two dates.

Python datetime.date(year, month, day) :

The function returns date object with same year, month and day. All arguments are required. Arguments may be integers, in the following ranges:

  • MINYEAR <= year <= MAXYEAR
  • 1 <= month <= 12
  • 1 <= day <= number of days in the given month and year

If an argument outside those ranges is given, ValueError is raised.

  • Note: The smallest year number allowed in a date or datetime object. MINYEAR is 1.
  • The largest year number allowed in a date or datetime object. MAXYEAR is 9999.

Pictorial Presentation:

Calculate number of days between two dates

Sample Solution:-

Python Code:

from datetime import date
f_date = date(2014, 7, 2)
l_date = date(2014, 7, 11)
delta = l_date - f_date
print(delta.days)

Sample Output: 

9

Flowchart:

Flowchart: Calculate number of days between two dates.

Visualize Python code execution:

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Python Code Editor:

 

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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