Course Content

Dealing with Dates and Times in Python

1. Working with Dates

What Day is it Today?Creating a Date Object Date Attributes Date Methods Date Formats One More Formatting Date Difference Arithmetic Operations with timedelta Objects

2. Working with Times

What Time is it Now?Creating a datetime Object Datetime Attributes Datetime Methods Datetime Formats 12-Hour and 24-Hour Formats Date and Time Difference Reading Date and Time from String

3. Timezones and Daylight Savings Time (DST)

The Variery of Timezones Timezone Examples Applying Timezone to Datetime Object What Time is it in ... ?Daylight Savings Time

4. Working with Dates and Times in pandas

Challenge: What Will We Work With?Challenge: Converting Columns into datetime Type Challenge: Extreme Trips Durations Challenge: Investigation Challenge: Negative Trip Duration Challenge: Is this Common Issue?Challenge: Fixing the Issues Challenge: Average Metrics Across Taxi Types Challenge: Corrected Metrics Across Taxi Types Challenge: Group by Period?

Applying Timezone to Datetime Object

Now we know about the variety of available timezones. How can we adjust it to a certain datetime object? How to make Python diff two datetime objects with different locations?

There are two approaches available. In this chapter, we consider the first. The algorithm is: create datetime object and save timezone within it using .localize() method. To do it, we will need to load timezone from pytz library. Then, we will need to create a timezone object, and then apply .localize() function to datetime object.

Please note, that this approach will simply 'put timezone label' on datetime object.

For example, let's represent all the mentioned steps.


              1234567891011
            
# Load libraries and classes
import pytz
from pytz import timezone
from datetime import datetime

tz = timezone('Europe/Warsaw') # save timezone
dt = datetime(2021, 11, 1, 11, 25, 0) # create datetime object

# Apply timezone to dt
dt_tz = tz.localize(dt)
print(f"Datetime object with timezone: {dt_tz}")

Task

Create timezone object named tz with value 'America/New_York'.
Create datetime object named now with a current timestamp.
Set tz timezone to now object and save it in now_tz variable.

Task

Create timezone object named tz with value 'America/New_York'.
Create datetime object named now with a current timestamp.
Set tz timezone to now object and save it in now_tz variable.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Section 3. Chapter 3

Applying Timezone to Datetime Object

Now we know about the variety of available timezones. How can we adjust it to a certain datetime object? How to make Python diff two datetime objects with different locations?

Please note, that this approach will simply 'put timezone label' on datetime object.

For example, let's represent all the mentioned steps.


              1234567891011
            
# Load libraries and classes
import pytz
from pytz import timezone
from datetime import datetime

tz = timezone('Europe/Warsaw') # save timezone
dt = datetime(2021, 11, 1, 11, 25, 0) # create datetime object

# Apply timezone to dt
dt_tz = tz.localize(dt)
print(f"Datetime object with timezone: {dt_tz}")

Task

Create timezone object named tz with value 'America/New_York'.
Create datetime object named now with a current timestamp.
Set tz timezone to now object and save it in now_tz variable.

Task

Create timezone object named tz with value 'America/New_York'.
Create datetime object named now with a current timestamp.
Set tz timezone to now object and save it in now_tz variable.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Section 3. Chapter 3

Applying Timezone to Datetime Object

Now we know about the variety of available timezones. How can we adjust it to a certain datetime object? How to make Python diff two datetime objects with different locations?

Please note, that this approach will simply 'put timezone label' on datetime object.

For example, let's represent all the mentioned steps.


              1234567891011
            
# Load libraries and classes
import pytz
from pytz import timezone
from datetime import datetime

tz = timezone('Europe/Warsaw') # save timezone
dt = datetime(2021, 11, 1, 11, 25, 0) # create datetime object

# Apply timezone to dt
dt_tz = tz.localize(dt)
print(f"Datetime object with timezone: {dt_tz}")

Task

Create timezone object named tz with value 'America/New_York'.
Create datetime object named now with a current timestamp.
Set tz timezone to now object and save it in now_tz variable.

Task

Create timezone object named tz with value 'America/New_York'.
Create datetime object named now with a current timestamp.
Set tz timezone to now object and save it in now_tz variable.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Now we know about the variety of available timezones. How can we adjust it to a certain datetime object? How to make Python diff two datetime objects with different locations?

Please note, that this approach will simply 'put timezone label' on datetime object.

For example, let's represent all the mentioned steps.


              1234567891011
            
# Load libraries and classes
import pytz
from pytz import timezone
from datetime import datetime

tz = timezone('Europe/Warsaw') # save timezone
dt = datetime(2021, 11, 1, 11, 25, 0) # create datetime object

# Apply timezone to dt
dt_tz = tz.localize(dt)
print(f"Datetime object with timezone: {dt_tz}")

Task

Create timezone object named tz with value 'America/New_York'.
Create datetime object named now with a current timestamp.
Set tz timezone to now object and save it in now_tz variable.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Section 3. Chapter 3

Switch to desktop for real-world practiceContinue from where you are using one of the options below