Vb6 type to python

[DFS]

On 11/30/2022 6:56 AM, luca72.b... at gmail.com wrote:

> Hello i have a byte file, that fill a vb6 type like:
> Type prog_real
>      codice As String * 12        'hsg
>      denom  As String * 24        'oo
>      codprof As String * 12       'ljio
>      note As String * 100
>      programmer As String * 11
>      Out As Integer
>      b_out As Byte                'TRUE = Sec   FALSE= mm
>      asse_w As Byte               '3.zo Asse --> 0=Z  1=W
>      numpassi  As Integer         'put
>      len As Long                  'leng
>      p(250) As passo_pg
>      vd(9) As Byte                'vel.
>      qUscita(9) As Integer        'quote
>      l_arco As Long               'reserved
>      AxDin As Byte                'dime
> End Type
> 
> How i can convert to python


You don't need to declare variable types in Python.

I don't do Python OO so someone else can answer better, but a simple 
port of your VB type would be a python class definition:

class prog_real:
     codice, denom, codprof, note, programmer
     AxDin, b_out, asse_w, vd, Out, numpassi, qUscita
     len, l_arco, p

important: at some point you'll have trouble with a variable named 
'len', which is a Python built-in function.

For a visual aid you could label the variables by type and assign an 
initial value, if that helps you keep track in your mind.

class prog_real:
     # strings
     codice, denom, codprof, note, programmer = '', '', '', '', ''

     # bytes
     AxDin, b_out, asse_w, vd = 0, 0, 0, 0

     # ints
     Out, numpassi, qUscita = 0, 0, 0

     # longs
     len, l_arco = 0, 0

     # misc
     p = ''

But it's not necessary.

To restrict the range of values in the variables you would have to 
manually check them each time before or after they change, or otherwise 
force some kind of error/exception that occurs when the variable 
contains data you don't want.


# assign values
prog_real.codice = 'ABC'
print('codice: ' + prog_real.codice)
prog_real.codice = 'DEF'
print('codice: ' + prog_real.codice)
prog_real.codice = 123
print('codice: ' + str(prog_real.codice))


And as shown in the last 2 lines, a variable can accept any type of 
data, even after it's been initialized with a different type.

b = 1
print(type(b))
<class 'int'>
b = 'ABC'
print(type(b))
<class 'str'>


Python data types:
https://www.digitalocean.com/community/tutorials/python-data-types

A VB to python program:
https://vb2py.sourceforge.net