Python Standard Library with example

 The Python Standard Library is a collection of modules that come bundled with the Python programming language. These modules cover a wide range of functionalities, making it easier for developers to perform various tasks without having to write everything from scratch. Let's explore some examples of using modules from the Python Standard Library:

1. `math` module - Mathematical functions:

```python
import math

# Calculate the square root of a number
x = 25
sqrt_x = math.sqrt(x)
print(sqrt_x)  # Output: 5.0

# Calculate the factorial of a number
n = 5
factorial_n = math.factorial(n)
print(factorial_n)  # Output: 120

# Calculate the value of pi
pi_value = math.pi
print(pi_value)  # Output: 3.141592653589793
```

2. `random` module - Generate random numbers:

```python
import random

# Generate a random integer between 1 and 10 (inclusive)
random_number = random.randint(1, 10)
print(random_number)

# Generate a random floating-point number between 0 and 1
random_float = random.random()
print(random_float)
```

3. `datetime` module - Date and time handling:

```python
from datetime import datetime

# Get the current date and time
current_datetime = datetime.now()
print(current_datetime)  # Output: 2023-07-26 14:30:00.123456

# Formatting date and time
formatted_datetime = current_datetime.strftime("%Y-%m-%d %H:%M:%S")
print(formatted_datetime)  # Output: 2023-07-26 14:30:00
```

4. `os` module - Operating system interface:

```python
import os

# Get the current working directory
current_dir = os.getcwd()
print(current_dir)

# List all files and directories in the current directory
files_and_dirs = os.listdir()
print(files_and_dirs)
```

5. `json` module - Working with JSON data:

```python
import json

# JSON data as a string
json_data = '{"name": "John", "age": 30, "city": "New York"}'

# Convert JSON string to a Python dictionary
data_dict = json.loads(json_data)
print(data_dict)

# Convert Python dictionary to a JSON string
json_str = json.dumps(data_dict)
print(json_str)
```

These are just a few examples of the many modules available in the Python Standard Library. The Standard Library provides solutions for tasks related to data manipulation, file handling, networking, regular expressions, threading, and much more. It is highly recommended to explore the Python documentation to discover the full capabilities of the Standard Library.