[Tutor] Decimal truncation, rounding etc.

[Joe Cox]

Yes, I made a typo in the quantize. You are correct I am not able to read
and parse the text file properly?
I just face that IDE screen and it's all white. I am lost.

  -----Original Message-----
  From: Jason Massey [mailto:jason.massey at gmail.com]
  Sent: Wednesday, October 25, 2006 4:25 PM
  To: jgcox39 at highstream.net
  Cc: tutor
  Subject: Re: [Tutor] Decimal truncation, rounding etc.


  More specifically, Joe, where and what types of errors are you getting?

  When I type in your example exactly as above I get the following:

  >>>from decimal import *
  >>>
Decimal('7.0000').quantize(Decimal('1.000'),rounding=decimal.ROUND_DOWN)
  Traceback (most recent call last):
    File "<interactive input>", line 1, in ?
  NameError: name 'decimal' is not defined

  That error appears because you've imported all of the decimal functions
into the global namespace and you're trying to reference a value in the
decimal namespace.  In your example it'd have to look like this to work:

  >>>Decimal('7.0000').quantize(Decimal('1.000'),rounding=ROUND_DOWN)  #note
the lack of decimal in front of ROUND_DOWN
  Decimal("7.000")

  Or is the problem that you're not able to read and parse the text file
properly?






  On 10/25/06, Joe Cox <jgcox39 at highstream.net> wrote:
    My next project is to read a doc file and do some number editing.
    I can alter numbers in the Interactive Shell OK:

    import math
    print round(7.12345,4)
    7.1234

    from decimal import*
    Decimal('7.00000').quantize(Decimal('1.000'),rounding =
decimal.ROUND_DOWN)
    Decimal("7.0000")

    But when I go in to IDLE, I just don't seem to be able to make this
work.

    A typical line of code for me to read and edit will look like:
    G01 G91 X7.12345 Y7.0000 Z-0.0086
    The underlines is what I need to edit, as above.

    I must not understand something fundamental.


    Joe Cox
    513-293-4830


    _______________________________________________
    Tutor maillist  -  Tutor at python.org
    http://mail.python.org/mailman/listinfo/tutor




-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.python.org/pipermail/tutor/attachments/20061025/0772c7b2/attachment.html