elementary tuple question. (sorry)

[Steven W. Orr]

I have a tuple that I got from struct.unpack. Now I want to pass the data
from the returned tuple to struct.pack

>>fmt

'l 10l 11i h 4h c 47c 0l'

>>>struct.pack( fmt, tup)

Traceback (most recent call last):
File "<stdin>", line 1, in ?
struct.error: required argument is not an integer

What's the idiom to pass the data in tup?

TIA

--
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steveo at syslang.net

[attn.steven.kuo@gmail.com]

Re: elementary tuple question. (sorry)

On Apr 5, 2:08 pm, "Steven W. Orr" <ste...@syslang .netwrote:

I have a tuple that I got from struct.unpack. Now I want to pass the data
from the returned tuple to struct.pack
>

>fmt

>
'l 10l 11i h 4h c 47c 0l'>>>struct.pa ck(fmt, tup)
>
Traceback (most recent call last):
File "<stdin>", line 1, in ?
struct.error: required argument is not an integer
>
What's the idiom to pass the data in tup?
>

Try

mystring = struct.pack(fmt , *tup)

--
Hope this helps,
Steven

[7stud]

Re: elementary tuple question. (sorry)

On Apr 5, 3:08 pm, "Steven W. Orr" <ste...@syslang .netwrote:

I have a tuple that I got from struct.unpack. Now I want to pass the data
from the returned tuple to struct.pack
>

>fmt

>
'l 10l 11i h 4h c 47c 0l'>>>struct.pa ck(fmt, tup)
>
Traceback (most recent call last):
File "<stdin>", line 1, in ?
struct.error: required argument is not an integer
>
What's the idiom to pass the data in tup?
>
TIA
>

import struct

fmt = "l l"
result = struct.pack(fmt , 12, 4)

t = (12, 4)
result = struct.pack(fmt , *t)
---------

The * unpacks the tuple.

[mik3l3374@gmail.com]

Re: elementary tuple question. (sorry)

On Apr 6, 5:31 am, "7stud" <bbxx789_0...@y ahoo.comwrote:

On Apr 5, 3:08 pm, "Steven W. Orr" <ste...@syslang .netwrote:
>

I have a tuple that I got from struct.unpack. Now I want to pass the data
from the returned tuple to struct.pack

>

>>fmt

>

'l 10l 11i h 4h c 47c 0l'>>>struct.pa ck(fmt, tup)

>

Traceback (most recent call last):
File "<stdin>", line 1, in ?
struct.error: required argument is not an integer

>

What's the idiom to pass the data in tup?

>

TIA

>
import struct
>
fmt = "l l"
result = struct.pack(fmt , 12, 4)
>
t = (12, 4)
result = struct.pack(fmt , *t)
---------
>
The * unpacks the tuple.

there's an unpack().

>>struct.unpack (fmt,result)