feat: Template.DoLoop.py / Until.py ( Fixes #929, Fixes #939 )

Adding Until and making documentation more consistent.

Author: James Brundage

Languages/Python/Templates/Python-Template-DoLoop.ps.ps1

@@ -7,7 +7,10 @@ Template function DoLoop.py {
     .NOTES
         There is not a proper `do` loop in Python, so we have to be a little creative.
 
-        This will produce a while loop where the `-InitialCondition` should always be true, and,         
+        This will produce a while loop where the `-InitialCondition` should always be true,
+        and the `-Condition` will be checked at the end of each loop.
+
+        If the `Condition` is false, then the loop will break.
     .EXAMPLE
         Template.DoLoop.py -Condition "False" -Body "print('This happens once')"
     #>    

Languages/Python/Templates/Python-Template-UntilLoop.ps.ps1

@@ -0,0 +1,72 @@
+Template function UntilLoop.py {
+    <#
+    .SYNOPSIS
+        Template for a Python `until` Loop
+    .DESCRIPTION
+        Template for a `until` loop in Python.
+    .NOTES
+        There is not a proper `do` or `until` loop in Python, so we have to be a little creative.
+
+        This will produce a while loop where the `-InitialCondition` should always be true,
+        and the `-Condition` will be checked at the end of each iteration.
+
+        If the `Condition` is true, then the loop will break.
+    .EXAMPLE
+        Template.UntilLoop.py -Condition "True" -Body "print('This happens once')"
+    #>    
+    param(    
+    # The Loop's Condition.
+    # This determines if the loop should continue running.
+    # This defaults to 0 > 1, so that the loop only occurs once
+    [vbn()]
+    [string]
+    $Condition = "False",
+
+    # The Loop's Initial Condition.
+    # Since Python does not have a `do` loop, this needs to be any truthy condition for the loop to run.
+    [vbn()]
+    [string]
+    $InitialCondition = 'True',
+    
+    # The body of the loop
+    [vbn()]
+    [string]
+    $Body,
+
+    # The number of spaces to indent the body.
+    # By default, two.
+    [vbn()]
+    [int]
+    $BodyIndent = 2,
+
+    # The number of spaces to indent all code.
+    # By default, zero
+    [vbn()]
+    [int]
+    $Indent = 0
+    )
+
+    process {
+        if ($body -match '^\{') {
+            $body = $body -replace '^\s{0,}\{' -replace '\}\s{0,}$'
+        }        
+        if ($Condition -match '^\$') {
+            $Condition = $Condition -replace '^\$'
+        }
+        '' + 
+            $(if ($Indent) {(' ' * $Indent)}) +
+            (@"
+while ${InitialCondition}:
+$(' ' * $BodyIndent)$(
+    $Body -split "(?>\r\n|\n)" -join ([Environment]::NewLine + $(' ' * $BodyIndent))
+)
+$(' ' * $BodyIndent)$(
+    "if ${Condition}:$(
+        [Environment]::NewLine + (' ' * $BodyIndent * 2)
+    )break"
+)
+"@ -split '(?>\r\n|\n)' -join ([Environment]::NewLine + $(' ' * $Indent)))
+    }
+}
+
+