Re: [Tutor] Decimal truncation, rounding etc.

[Jason Massey]

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 <[EMAIL PROTECTED]> 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

 

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