[Tutor] Problems with class, no output

[Kent Johnson]

Dave,

For some reason the indentation is very strange in this code. I think it must have something to do 
with how you posted it (or my mailer is messing it up?), as it would be a syntax error at runtime. 
If you can have more consistent indentation in your posts it will make them much easier to read.

Glad you got it working!

Kent

Dave S wrote:
> Hello again  :-) ,
> 
> This script is very much a work in progress, and I think only the second 
> time I have tried classes. What I expected it to do was to at least 
> print 'hi there' so I know its alive, then dump some status info to my 
> log program. It does zip, executes OK but no output.
> 
> I just know you guys are going to tell me I have missed a () or . somewhere
> 
> Any help gratefully appreciated
> Dave
> 
> 
> 
> 
> 
> #!/usr/bin/env python
> # -*- coding: iso8859_1 -*-
> 
> """
> arch_data.py 1.0 This is the read archive data script
> """
> 
> from os import listdir
> from cPickle import load
> from logger import log
> 
> from config import data_dir
> 
> debug=True
>    class Arch_data:
>       def __init__(self):
>           self.file_names=listdir(data_dir)
>        self.file_names.sort()
>        self.file_name_ptr=0
>           def read_next():
>        """
>        when executed reads next data file from data_dir extracts date,
>        time,julian day,sequence count & flag from the file name.
>               Also adds last_file flag and contents of file to the list 
> of returned
>        parameters
>        """
>        print 'hi there'
>               file_name=self.file_names[self.file_name_ptr]
>               # Ignore the archive_read.py utility script in the data dir
> ##        if file_name=='archive_read.py':
> ##            if debug:
> ##                log('II','arch_data','Ignoring "archive_read.py"')
> ##            self.file_name_ptr+=1
> ##            read.next()
> ##            return
>           # Extract info from the encoded filename :-)
>        file_yy=file_name[:4]
>        file_mm=file_name[4:6]
>        file_dd=file_name[6:8]
>        file_HH=file_name[9:11]
>        file_MM=file_name[11:13]
>        file_jj=file_name[14:17]
>        file_seq=file_name[18:21]
>        file_flag=file_name[22:24]
>               if debug:
>            log('II','arch_data','unpickling '+file_name)
>               pickle_file=open(data_dir+file_name,'r')
>        file=load(pickle_file)
>        pickle_file.close()
>               print 
> file_yy,file_mm,file_dd,file_HH,file_MM,file_jj,file_seq,file_flag
> 
>        self.file_name_ptr+=1
>    arch_data=Arch_data()
> arch_data.read_next
> 
> 
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