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Pandas: Difference between two dates or times

Pandas Time Series: Exercise-4 with Solution

Write a Pandas program to print the day after and before a specified date. Also print the days between two given dates.

Sample Solution:

Python Code :

import pandas as pd
import datetime
from datetime import datetime, date
today = datetime(2012, 10, 30)
print("Current date:", today)
tomorrow = today + pd.Timedelta(days=1)
print("Tomorrow:", tomorrow)
yesterday = today - pd.Timedelta(days=1)
print("Yesterday:", yesterday)
date1 = datetime(2016, 8, 2)
date2 = datetime(2016, 7, 19)
print("\nDifference between two dates: ",(date1 - date2))

Sample Output:

Current date: 2012-10-30 00:00:00
Tomorrow: 2012-10-31 00:00:00
Yesterday: 2012-10-29 00:00:00

Difference between two dates:  14 days, 0:00:00

Python Code Editor:


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Previous: Write a Pandas program to create a date from a given year, month, day and another date from a given string formats.
Next: Write a Pandas program to create a time-series with two index labels and random values. Also print the type of the index.

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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