Handy python snippets. Taken from: https://towardsdatascience.com/bite-sized-python-recipes-52cde45f1489

createDictFromLists.py

prod_id = [1, 2, 3]
prod_name = ["foo", "bar", "baz"]
prod_dict = dict(zip(prod_id, prod_name))

firstMatch.py

# Find the first element, if any, from an iterable that matches a condition.

def first_match(iterable, check_condition, default_value=None):
  return next((i for i in iterable if check_condition(i)), default_value)

# example 01
nums = [1, 2, 4, 0, 5]
first_match(nums, lambda x: x > 9)  # Returns nothing.
first_match(nums, lambda x: x > 9, 'no_match')  # Returns 'no_match'

socketFunctions.py

import socket

# Create a socket
sock = socket.socket(socket_family, socket_type)

# Create a stream socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# Socket family (here Adress Family veriosn 4 or IPv4)
AF_INET

# Socket type TCP connections
SOCKET_STREAM

# Socket type UDP connections
SOCK_DGRAM

# Translate a host name to IPv4 address format
gethostbyname("host")

# Translate a host name to IPv4 address format, extended interface
socket.gethostbyname_ex("host")

# Get the fqdn (fully qualified domain name)
socket.getfqdn("8.8.8.8")

# Returns the host name of the machine
socket.gethostname()

# Exception handling
socket.error

timeDecorator.py

from time import time
from functools import wraps

def timeit(func):
  """
  :param func: Decorated function
  :return: Execution time for the decorated function
  """
  
  @wraps(func)
  def wrapper(*args, **kwargs):
    start = time()
    result = func(*args, **kwargs)
    end = time()
    print(f'{func.__name__} executed in {end - start:.4f} seconds')
    return result
  
  return wrapper

# Example of use: ----------------------------------------------------------------
import random

# An arbitrary function.
@timeit
def sort_rnd_num():
  numbers = [random.randint(100, 200) for _ in range(100000)]
  numbers.sort()
  return numbers

numbers = sort_rnd_num()  # prints 'sort_rnd_num executed in 0.1880 seconds'
# ----------------------------------------------------------------------------------