[Tutor] how to read from a txt file

Liam Clarke cyresse at gmail.com
Tue Mar 15 00:53:26 CET 2005


Oops, and I meant

try:
   tempLine = int(line)

Silly indent error.


On Tue, 15 Mar 2005 12:52:49 +1300, Liam Clarke <cyresse at gmail.com> wrote:
> Well, a string "12345" when called through int() will come back as 12345.
> 
> But, a string "foo", called through int(), will raise a TypeError.
> 
> So....
> 
> > import sys
> >
> > data_file = open('C:/Documents and Settings/nyer/Desktop/nyer.txt', 'r')
> > data = data_file.readlines()
> >
> > def process(list_of_lines):
> >     data_points = []
> >     for line in list_of_lines:
> >         data_points.append(int(line))
> >     return data_points
> >
> > print process(data)
> 
> You could do this
> 
> def process(list_of_lines):
>      data_points=[]
>          for line in list_of_lines:
>                try:
>                tempLine = int(line)
>                except TypeError:
>                    print "Non numeric character in line", line
>                    continue #Breaks, and starts with next line
>                data_points.append(tempLine)
> 
> That's one way, but there's probably a better way.
> 
> Regards,
> 
> Liam Clarke
> --
> 'There is only one basic human right, and that is to do as you damn well please.
> And with it comes the only basic human duty, to take the consequences.
> 


-- 
'There is only one basic human right, and that is to do as you damn well please.
And with it comes the only basic human duty, to take the consequences.


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