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zk/Dates_in_Python.md
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@ -17,7 +17,7 @@ import datetime
### Getting Current Date and Time ### Getting Current Date and Time
You can get the current date and time using `datetime.datetime.now()`. Get the current date and time using `datetime.datetime.now()`.
```python ```python
current_datetime = datetime.datetime.now() current_datetime = datetime.datetime.now()
@ -26,8 +26,8 @@ print("Current datetime:", current_datetime)
### Creating Date Objects ### Creating Date Objects
To create a date object, you can use `datetime.date`, specifying the year, To create a date object, use `datetime.date`, specifying the year, month, and
month, and day. day.
```python ```python
some_date = datetime.date(2021, 9, 30) some_date = datetime.date(2021, 9, 30)
@ -36,8 +36,8 @@ print("Some date:", some_date)
### Creating Time Objects ### Creating Time Objects
To create a time object, you can use `datetime.time`, specifying the hour, To create a time object, use `datetime.time`, specifying the hour, minute,
minute, second, and optionally microsecond. second, and optionally microsecond.
```python ```python
some_time = datetime.time(13, 24, 56) some_time = datetime.time(13, 24, 56)
@ -46,16 +46,16 @@ print("Some time:", some_time)
### Creating Datetime Objects ### Creating Datetime Objects
To create a datetime object, you can use `datetime.datetime`. To create a datetime object, use `datetime.datetime`.
```python ```python
some_datetime = datetime.datetime(2021, 9, 30, 13, 24, 56) some_datetime = datetime.datetime(2021, 9, 30, 13, 24, 56)
print("Some datetime:", some_datetime) print("Some datetime:", some_datetime)
``` ```
### Extracting Components ### Extracting components
You can extract various components from a datetime object like so: Extract components from a datetime object:
```python ```python
print("Year:", some_datetime.year) print("Year:", some_datetime.year)
@ -75,7 +75,7 @@ This would typically be used when we have been working with a computer-friendly
format of a date such as unix seconds which we then want to output in a more format of a date such as unix seconds which we then want to output in a more
readable format. readable format.
In the example below we use `strftime` to express the current date as YYYY-MM: Use `strftime` to express the current date as YYYY-MM:
```python ```python
now = datetime.now() now = datetime.now()
@ -84,15 +84,14 @@ print(formatted)
# 2024-06 # 2024-06
``` ```
Another example, for YYYY-MM-DD H:M:S: Express the current date as YYYY-MM-DD H:M:S:
```python ```python
formatted_datetime = some_datetime.strftime('%Y-%m-%d %H:%M:%S') formatted_datetime = some_datetime.strftime('%Y-%m-%d %H:%M:%S')
print("Formatted datetime:", formatted_datetime) print("Formatted datetime:", formatted_datetime)
``` ```
Below is a real example that uses a [unix timestamp](./Time_and_computers.md) as Express a [unix timestamp](./Time_and_computers.md) as DD-MM-YYYY:
the input:
```py ```py
def convert_timestamp(timestamp): def convert_timestamp(timestamp):
@ -110,11 +109,10 @@ print(converted)
The `strptime` (_string_parse_time) method_ parses a string representing a date The `strptime` (_string_parse_time) method_ parses a string representing a date
and/or a time according to a specified format and returns a `datetime` object. and/or a time according to a specified format and returns a `datetime` object.
This would typically be used when want to carry out some sort of transformation Typically be used when want to carry out some sort of transformation on time
on time data that we are sourcing in a particular format. data that we are sourcing in a particular format.
In the example below we receive a date in the format DD-MM-YYYY and we convert Receive a date in the format DD-MM-YYYY and convert to datetime object:
it to a datetime object:
```python ```python
date_string = "18-06-2024" date_string = "18-06-2024"