fCONV_AUSRICHTG is not defined - Why?

[MRAB]

On 2023-11-07 19:20, Jim Schwartz via Python-list wrote:
> Where do you define fCONV_AUSRICHTG? It must be initialized or defined somewhere. Did you leave out a statement from the python 2 version?
> 
It's given its value here:

     (
         fNAME,
         fLG1,
         fLG2,
         fTYP,
         fCONV_AUSRICHTG,
         fENTRY_AUSRICHTG,
         fTEXT_AUSRICHTUNG,
         fHOLFUNKT,
         fPRUEFFUNKT,
         fPRUEF_ARG,
     ) = list(range(10))

> 
>> On Nov 7, 2023, at 1:06 PM, Thomas Passin via Python-list <python-list at python.org> wrote:
>> 
>> On 11/7/2023 12:47 PM, Egon Frerich via Python-list wrote:
>>> I've no idea why this happens. In a module there are lists and definitions:
>>>     Felder = [
>>>         # Name       lg1  lg2 typ   Ausrichtung Holen Prüfen Prüfvorg
>>>         ["Jahr", 4, 5, "u", "", "right", "center"],
>>>         ["Monat", 2, 5, "u", "", "right", "center"],
>>>         ["Tag", 2, 3, "u", "", "right", "center"],
>>>         ["Belegnr", 5, 7, "s", "", "right", "center"],
>>>         ["Bank", 2, 4, "u", "", "center", "center"],
>>>         ["Art", 2, 3, "u", "", "center", "center"],
>>>         ["Aufg", 2, 4, "u", "", "center", "center"],
>>>         ["Text", 25, 25, "s", "-", "left", "left"],
>>>         ["Ergänzung", 12, 12, "s", "-", "left", "left"],
>>>         ["Betrag", 13, 13, "s", "", "right", "right"],
>>>         ["W", 1, 2, "s", "", "center", "center"],
>>>         ["WBetrag", 7, 7, "s", "", "right", "right"],
>>>         ["Kurs", 6, 6, "s", "", "right", "right"],
>>>     ]
>>>     "Reihenfolge in der Dimension 1"
>>>     (
>>>         fJAHR,
>>>         fMONAT,
>>>         fTAG,
>>>         fBELEGNR,
>>>         fBANK,
>>>         fART,
>>>         fAUFGABE,
>>>         fTEXT,
>>>         fTEXTERG,
>>>         fBETRAG,
>>>         fWAEHRUNG,
>>>         fBETRAGinWAEHRUNG,
>>>         fUMRECHNUNGSKURS,
>>>     ) = list(range(13))
>>>     "Reihenfolge in der Dimension 2"
>>>     (
>>>         fNAME,
>>>         fLG1,
>>>         fLG2,
>>>         fTYP,
>>>         fCONV_AUSRICHTG,
>>>         fENTRY_AUSRICHTG,
>>>         fTEXT_AUSRICHTUNG,
>>>         fHOLFUNKT,
>>>         fPRUEFFUNKT,
>>>         fPRUEF_ARG,
>>>     ) = list(range(10))
>>> Two lines with  test statements follow and the statement which produces an error:
>>>     print(Felder)
>>>     print(fJAHR, fNAME, fTYP, fCONV_AUSRICHTG)
>>>     akette = "%" + "%".join(
>>>         ["%s%s%s " % (i[fCONV_AUSRICHTG], i[fLG2], i[fTYP]) for i in Felder])
>>> The traceback shows:
>>> $ python3 testGeldspurGUI.py
>>> [['Jahr', 4, 5, 'u', '', 'right', 'center'], ['Monat', 2, 5, 'u', '', 'right', 'center'], ['Tag', 2, 3, 'u', '', 'right', 'center'], ['Belegnr', 5, 7, 's', '', 'right', 'center'], ['Bank', 2, 4, 'u', '', 'center', 'center'], ['Art', 2, 3, 'u', '', 'center', 'center'], ['Aufg', 2, 4, 'u', '', 'center', 'center'], ['Text', 25, 25, 's', '-', 'left', 'left'], ['Ergänzung', 12, 12, 's', '-', 'left', 'left'], ['Betrag', 13, 13, 's', '', 'right', 'right'], ['W', 1, 2, 's', '', 'center', 'center'], ['WBetrag', 7, 7, 's', '', 'right', 'right'], ['Kurs', 6, 6, 's', '', 'right', 'right']]
>>> 0 0 3 4
>>> Traceback (most recent call last):
>>>   File "/home/egon/Entw/Geldspur/geldspur/testGeldspurGUI.py", line 15, in <module>
>>>     from tests.testU2 import testU2
>>>   File "/home/egon/Entw/Geldspur/geldspur/tests/testU2.py", line 9, in <module>
>>>     from gui.GUI_Konfig import GUIcfg
>>>   File "/home/egon/Entw/Geldspur/geldspur/gui/GUI_Konfig.py", line 11, in <module>
>>>     class GUIcfg:
>>>   File "/home/egon/Entw/Geldspur/geldspur/gui/GUI_Konfig.py", line 90, in GUIcfg
>>>     ["%s%s%s " % (i[fCONV_AUSRICHTG], i[fLG2], i[fTYP]) for i in Felder])
>>>   File "/home/egon/Entw/Geldspur/geldspur/gui/GUI_Konfig.py", line 90, in <listcomp>
>>>     ["%s%s%s " % (i[fCONV_AUSRICHTG], i[fLG2], i[fTYP]) for i in Felder])
>>> NameError: name 'fCONV_AUSRICHTG' is not defined
>>> You see "Felder" and with "0 0 3 4" the correct value 4 for fCONV_AUSRICHTG. But there is the NameError.
>>> What does <listcomp> mean? Is there a change from python2 to python3?
>> 
>> You are using a syntax that I don't understand, but "listcomp" means a list comprehenson.
>>