minor nit - string format %d used before defined

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Robert L

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May 30, 2011, 5:59:39 PM5/30/11
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url: http://homepage.mac.com/s_lott/books/python/html/p01/p01c10_adv_func.html#call-by-value-and-call-by-reference

print "x=%d, z=%d" % ( x, z )

I realize that you can only include so much in a book.

Q: What would be the loss in replacing the above w/

print x, y

Perhaps this was meant to cause the reader to think? If so, please
consider mentioning the phrase "format specification" and include a
link to the official Python doco

url: http://docs.python.org/library/string.html#format-specification-mini-language

Steven F. Lott

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May 30, 2011, 7:26:31 PM5/30/11
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The question is very, very hard to answer because it appears to assume a things that a trivial experiment would have shown to be patently false.

Actually run the actual blocks of code you're asking about. Rewrite the question to reflect what actually happens.

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Robert L

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May 30, 2011, 7:39:43 PM5/30/11
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Python version: 3.1.2
Tk version: 8.5
IDLE version: 3.1.2

Executed the code below

>>> ================================ RESTART ================================
>>> def to2( a ):
a = 2
return 0
>>> x = 27
>>> z = to2( x )
>>> print ("x=%d, z=%d" % ( x, z ))
x=27, z=0
>>> print("x=", x, ", z=", z)
x= 27 , z= 0

The only thing that I can't easily/quickly duplicate is the use of the
blank spaces.

Q: Besides the use of spaces in the output, what is lost if don't use
the %d string formatting?

Steven F. Lott

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May 30, 2011, 7:46:01 PM5/30/11
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That's not the original question, is it? Don't change questions randomly. I'm unclear on how this code matches the original question. This uses a different Print statement. Please focus, if possible.

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