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Pandas: The datetime, day, and time objects

Pandas Time Series: Exercise-1 with Solution

Write a Pandas program to create
a) Datetime object for Jan 15 2012.
b) Specific date and time of 9:20 pm.
c) Local date and time.
d) A date without time.
e) Current date.
f) Time from a datetime.
g) Current local time.

Sample Solution:

Python Code :

import datetime
from datetime import datetime
print("Datetime object for Jan 11 2012:")
print(datetime(2012, 1, 11))
print("\nSpecific date and time of 9:20 pm") 
print(datetime(2011, 1, 11, 21, 20))
print("\nLocal date and time:")
print(datetime.now())
print("\nA date without time: ")
print(datetime.date(datetime(2012, 5, 22)))
print("\nCurrent date:")
print(datetime.now().date())
print("\nTime from a datetime:")
print(datetime.time(datetime(2012, 12, 15, 18, 12)))
print("\nCurrent local time:") 
print(datetime.now().time())

Sample Output:

Datetime object for Jan 11 2012:
2012-01-11 00:00:00

Specific date and time of 9:20 pm
2011-01-11 21:20:00

Local date and time:
2020-08-17 09:56:17.459790

A date without time: 
2012-05-22

Current date:
2020-08-17

Time from a datetime:
18:12:00

Current local time:
09:56:17.461250           

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