Mailing List Archive: fCONV_AUSRICHTG is not defined

fCONV_AUSRICHTG is not defined - Why?

Nov 7, 2023, 9:47 AM

Post #1 of 10 (268 views)

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?

Egon

--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 7, 2023, 10:30 AM

Post #2 of 10 (266 views)

Permalink

On 08/11/2023 06.47, Egon Frerich via Python-list wrote:
> I've no idea why this happens. In a module there are lists and definitions:
...

> ["%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?

Works for me (Python 3.11 on Fedora-Linux 37)
- both as a script, and simple/single import.

What happens when you extract the second dimension's definitions into a
module of their own, and import that (with/out less-sophisticated join)?

--
Regards,
=dn
--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 7, 2023, 11:05 AM

Post #3 of 10 (266 views)

Permalink

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.

--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 7, 2023, 11:10 AM

Post #4 of 10 (266 views)

Permalink

On 2023-11-07 18:30, dn via Python-list wrote:
> On 08/11/2023 06.47, Egon Frerich via Python-list wrote:
>> I've no idea why this happens. In a module there are lists and definitions:
> ...
>
>> ["%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?
>
> Works for me (Python 3.11 on Fedora-Linux 37)
> - both as a script, and simple/single import.
>
> What happens when you extract the second dimension's definitions into a
> module of their own, and import that (with/out less-sophisticated join)?
>
The missing detail is this line from the traceback:

File "/home/egon/Entw/Geldspur/geldspur/gui/GUI_Konfig.py", line 11,
in <module>
class GUIcfg:

Here's a small example that shows the problem:

----8<----
#!python3.11
# -*- encoding: utf-8 -*-

class Test:
hello = "hello"
print(hello)
print([[zero] for _ in range(4)])
----8<----

and its traceback:

----8<----
hello
Traceback (most recent call last):
File "C:\Projects\regex3\test_clipboard.py", line 4, in <module>
class Test:
File "C:\Projects\regex3\test_clipboard.py", line 7, in Test
print([zero for _ in range(4)])
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Projects\regex3\test_clipboard.py", line 7, in <listcomp>
print([zero for _ in range(4)])
^^^^
NameError: name 'zero' is not defined
----8<----

'zero' is visible in:

print(hello)

but not in:

print([zero for _ in range(4)])

Something to do with how scoping is implemented in comprehensions?

--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 7, 2023, 11:20 AM

Post #5 of 10 (266 views)

Permalink

Where do you define fCONV_AUSRICHTG? It must be initialized or defined somewhere. Did you leave out a statement from the python 2 version?

Sent from my iPhone

> On Nov 7, 2023, at 1:06 PM, Thomas Passin via Python-list <python-list@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.
>
> --
> https://mail.python.org/mailman/listinfo/python-list

--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 7, 2023, 12:29 PM

Post #6 of 10 (266 views)

Permalink

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@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.
>>

--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 7, 2023, 12:56 PM

Post #7 of 10 (266 views)

Permalink

On 11/7/2023 3:29 PM, MRAB via Python-list wrote:
> 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))

This construction is a sneaky way to assign index numbers to list
entries. A simplified example:

>>> S1 = 'string 1'
>>> S2 = 'string 2'
>>> (fS1, fS2) = list(range(2))
>>> fS1
0
>>>
>>> fS2
1

>>
>>> On Nov 7, 2023, at 1:06 PM, Thomas Passin via Python-list
>>> <python-list@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.
>>>
>

--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 7, 2023, 2:08 PM

Post #8 of 10 (266 views)

Permalink

On 2023-11-07 20:56, Thomas Passin via Python-list wrote:
> On 11/7/2023 3:29 PM, MRAB via Python-list wrote:
>> 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))
>
>
> This construction is a sneaky way to assign index numbers to list
> entries. A simplified example:
>
> >>> S1 = 'string 1'
> >>> S2 = 'string 2'
> >>> (fS1, fS2) = list(range(2))
> >>> fS1
> 0
> >>>
> >>> fS2
> 1
>
You don't need the 'list', though: range(...) will work on its own.

[snip]

--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 7, 2023, 4:31 PM

Post #9 of 10 (264 views)

Permalink

On 8/11/23 8:10 am, MRAB wrote:
> Something to do with how scoping is implemented in comprehensions?

Yes, together with the way class scopes work during class construction.

Behind the scenes, the body of a listcomp happens to be implemented
as a nested function.

Usually you don't notice this, but while a class is being built,
its scope doesn't count as an enlosing scope for functions defined
within the class.

This is necessary, otherwise all of a class's attributes would be
visible inside its methods, which isn't what we want. However, it
leads to some odd corner cases, such as this one.

There are various ways you could work around this. I would suggest
moving the offending code outside the class and qualifying the
constants it uses with the class name.

--
Greg
--
https://mail.python.org/mailman/listinfo/python-list

Re: fCONV_AUSRICHTG is not defined - Why? [ In reply to ]

python-list at python

Nov 8, 2023, 12:24 AM

Post #10 of 10 (255 views)

Permalink

Am 07.11.23 um 20:10 schrieb MRAB via Python-list:
> On 2023-11-07 18:30, dn via Python-list wrote:
>> On 08/11/2023 06.47, Egon Frerich via Python-list wrote:
>>> I've no idea why this happens. In a module there are lists and
>>> definitions:
>> ...
>>
>>>      ["%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?
>>
>> Works for me (Python 3.11 on Fedora-Linux 37)
>> - both as a script, and simple/single import.
>>
>> What happens when you extract the second dimension's definitions into a
>> module of their own, and import that (with/out less-sophisticated join)?
>>
> The missing detail is this line from the traceback:
>
>    File "/home/egon/Entw/Geldspur/geldspur/gui/GUI_Konfig.py", line 11,
> in <module>
>      class GUIcfg:
>
You are right. The list comprehension has to be outside the class. The
scope rules have been changed python2 and python3.

Egon

> Here's a small example that shows the problem:
>
> ----8<----
> #!python3.11
> # -*- encoding: utf-8 -*-
>
> class Test:
>     hello = "hello"
>     print(hello)
>     print([[zero] for _ in range(4)])
> ----8<----
>
> and its traceback:
>
> ----8<----
> hello
> Traceback (most recent call last):
> File "C:\Projects\regex3\test_clipboard.py", line 4, in <module>
>     class Test:
> File "C:\Projects\regex3\test_clipboard.py", line 7, in Test
>     print([zero for _ in range(4)])
>          ^^^^^^^^^^^^^^^^^^^^^^^^^^
> File "C:\Projects\regex3\test_clipboard.py", line 7, in <listcomp>
>     print([zero for _ in range(4)])
>            ^^^^
> NameError: name 'zero' is not defined
> ----8<----
>
> 'zero' is visible in:
>
>     print(hello)
>
> but not in:
>
>     print([zero for _ in range(4)])
>
> Something to do with how scoping is implemented in comprehensions?
>

--
https://mail.python.org/mailman/listinfo/python-list