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#!python
# Background https://www.springer.com/cda/content/document/cda_downloaddocument/9783540286073-c2.pdf
# Example 1 adapted from https://stackoverflow.com/questions/12581437/python-random-sample-with-a-generator-iterable-iterator/
# 
# Reference: 1) https://docs.python.org/3/library/functions.html
#            2) https://docs.python.org/3/library/itertools.html
#            3) https://docs.python.org/3/library/random.html

from itertools import islice
from random import randint

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#!python3
# Reference: 1) https://pro.arcgis.com/en/pro-app/arcpy/data-access/searchcursor-class.htm
#            2) https://pro.arcgis.com/en/pro-app/arcpy/data-access/updatecursor-class.htm
#            3) https://docs.python.org/3/library/itertools.html

import arcpy
from itertools import chain, zip_longest, tee

fc = # Path to feature class or name of feature layer
flds = # Fields to include in cursor

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#!python3
# Reference: 1) https://www.gutenberg.org/ebooks/29765
# Reference: 2) https://wordnet.princeton.edu/download/current-version

from itertools import dropwhile, takewhile
import re
import urllib.request

# Example 1: Project Gutenberg's Webster's Unabridged Dictionary (Webster's Dictionary 1913)  
url = r"https://www.gutenberg.org/cache/epub/29765/pg29765.txt"

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#!python
# Reference: 1) https://docs.python.org/3/library/collections.html#collections.defaultdict
# Reference: 2) https://www.python.org/dev/peps/pep-0342/

from collections import defaultdict

# Example 1:  Using coroutine via generator for multivalue counter
def multi_counter_generator():
    cnt = defaultdict(int)
    incr = yield cnt.items()

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#Requires -Version 5.1
# Reference: 1) https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_regular_expressions
# Reference: 2) https://docs.microsoft.com/en-us/dotnet/standard/base-types/regular-expression-language-quick-reference

$TestEmailFrom = @(
    "[email protected]"
    "  [email protected]    "
    "<[email protected]>"
    " <  [email protected]  > "
    "Smokey Bear <[email protected]>"

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#Requires -Version 5.1
# Reference: 1) https://docs.microsoft.com/en-us/dotnet/api/system.net.servicepointmanager
# Reference: 2) https://docs.microsoft.com/en-us/dotnet/api/system.net.security.remotecertificatevalidationcallback


# Example 1: Force TLS 1.2 connections from client
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

# Example 2: Ignore all SSL/TLS policy errors, e.g., ignore SSL/TLS secure channel errors 
#            from self-signed certificates

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#Requires -Version 5.1
# Reference: 1) https://docs.microsoft.com/en-us/dotnet/api/system.security.principal

# Example 1: Retrieve security identifier value (SID) for an NT account
# Adapted from https://devblogs.microsoft.com/scripting/use-powershell-to-translate-a-users-sid-to-an-active-directory-account-name/
$DomainName = ""   # Domain of account, commonly $Env:USERDOMAIN
$AccountName = ""  # Name of account, commonly $Env:USERNAME

$NTAccount = [Security.Principal.NTAccount]::New($DomainName, $AccountName)
$Sid = ($NTAccount.Translate([Security.Principal.SecurityIdentifier])).Value

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#!python3
# Reference: 1) https://docs.python.org/3/library/stdtypes.html#special-attributes

# Example 1:  Function to print base class or subclass hierarchies
def print_classtree(cls, bases=True, level=0):
    print(f"{'-'*2*level} {cls}")
    if bases:
        classes = cls.__bases__
    else:
        classes = cls.__subclasses__()

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#Requires -Version 5.1
# Reference: 1) https://docs.microsoft.com/en-us/dotnet/api/system.collections.arraylist
# Reference: 2) https://docs.microsoft.com/en-us/dotnet/api/system.diagnostics.stopwatch
# Reference: 3) https://docs.microsoft.com/en-us/dotnet/api/system.io.filestream

# Example 1: Copy file and measure combined (read & write) transfer rate over time
$FilePath = ""      # Path of the file to copy
$Destination= ""    # Path to the new directory or folder
$BufferSize = 64    # Buffer size, in KB, for copying file