miscellaneous

Date and Time

example

yml
# YAML allows you to represent dates in a standard format, typically following the ISO 8601 standard (YYYY-MM-DD).
birth_date: 1990-12-31

# Times can also be represented using the ISO 8601 standard (HH:MM:SS).
meeting_time: 14:30:00

# YAML supports full timestamps, combining date and time.
event_timestamp: 2023-04-06T14:30:00Z

# Including a time zone in the timestamp ensures clarity across different regions.
local_timestamp: 2023-04-06T14:30:00+05:30

# Specify a range of dates or times using a custom format.
date_range: "2023-04-01 to 2023-04-07"
time_range: "14:30:00 to 15:30:00"

Custom Data Types 🛠️

You can define custom data types using tags.

yml
!color
name: Blue
code: "#0000FF"

• The !color tag is a custom type indicating that this mapping represents a color with a name and code.

Python Program to Read a YAML File 🐍📄

cmd
pip install pyyaml

Create a YAML file (example.yaml)

yml
# example.yaml
name: chaitu-ycr
age: 30
address:
  street: 123 Main St
  city: chennai
  zip: 12345
hobbies:
  - Reading
  - Hiking
  - Coding

Python Script to read the YAML file

import yaml

# Function to read a YAML file
def read_yaml(file_path):
    with open(file_path, 'r') as file:
        data = yaml.safe_load(file)
    return data

# Path to the YAML file
yaml_file = 'example.yaml'

# Reading the YAML file
data = read_yaml(yaml_file)

# Printing the data
print(data)

python output

{
  'name': 'chaitu-ycr',
  'age': 30,
  'address': {
      'street': '123 Main St',
      'city': 'chennai',
      'zip': 12345
  },
  'hobbies': ['Reading', 'Hiking', 'Coding']
}

Python Program to Create a YAML File 🐍📄

Python Script to create and write to a YAML file

import yaml

# Sample data to be written to the YAML file
data = {
    'name': 'chaitu-ycr',
    'age': 30,
    'address': {
        'street': '123 Main St',
        'city': 'chennai',
        'zip': 12345
    },
    'hobbies': ['Reading', 'Hiking', 'Coding']
}

# Function to write data to a YAML file
def write_yaml(file_path, data):
    with open(file_path, 'w') as file:
        yaml.dump(data, file, default_flow_style=False)

# Path to the YAML file
yaml_file = 'output.yaml'

# Writing the data to the YAML file
write_yaml(yaml_file, data)

print(f"Data written to {yaml_file}")

The content of the output.yaml file will be

yml
name: chaitu-ycr
age: 30
address:
  street: 123 Main St
  city: chennai
  zip: 12345
hobbies:
- Reading
- Hiking
- Coding