PowerShell Python command-line arguments

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    • #1559377
      Xander Cage
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      Member Points: 184
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      I’m pursuing a python course and trying to run a Python script in PowerShell. While using the sys module I stumble upon the problem of getting the return value of a PowerShell function. The function in question is Date -f ‘dd\/MM\/yyyy’ that returns 14/03/2019 and I’d like that value to be used as an argument in the Python script. I’ve been able so far to get the literal arguments from the command line, e.g. text.

    • #1559402
      David Figueroa
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      Member Points: 4,096
      Rank: 3

      I’m guessing that date is some sort of shortcut for Get-Date.  (I hadn’t seen it before, but it only took a second to see what it’s doing).

      The key here is that date is producing a DateTime object.  Now — when you tack on the -f (format string operator), you are converting that DateTime to a String.

      PS C:\> date
      Thursday, December 3, 2020 9:56:30 PM
      PS C:\> (date).GetType()
      IsPublic IsSerial      Name           BaseType
      -------- --------      ----           --------
          True     True  DateTime   System.ValueType
      PS C:\> date -f 'dd/MM/yyyy'
      03/12/2020
      PS C:\> (date -f 'dd/MM/yyyy').GetType()
      IsPublic IsSerial    Name       BaseType
      -------- --------    ----       --------
          True     True  String  System.Object
      

      So, if you want to input it into your python function, get rid of the -f operator, it’s completely unnecessary at this point.

      Good luck!

      David F.

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