Re: [Tutor] why it is showing attribute error in line7
Hello, and welcome!
Please always post the FULL traceback. Python gives you lots of
information to debug problems, so you don't have to guess, but when you
throw that information away, we have to guess.
My guess follows below:
On Fri, Oct 28, 2016 at 09:42:35PM -0700, SONU KUMAR wrote:
> fname = raw_input("Enter file name: ")
> if len(fname) < 1 : fname = "mbox-short.txt"
> fh = open(fname)
> count = 0
> for line in fh:
>line=line.rstrip
That's the problem. You are not calling the method, instead you are
assigning the method line.rstrip to the variable "line". Watch the
difference here:
py> line = "some text"
py> a = line.rstrip() # with parentheses means call the method
py> b = line.rstrip # no parens means the method itself
py> print(a)
some text
py> print(b)
So using your code, you say:
py> line = line.rstrip # no parens
py> print(line)
which means when you come to the next line of code, you get an error:
>if not line.startswith("From"):continue
py> line.startswith('From')
Traceback (most recent call last):
File "", line 1, in
AttributeError: 'builtin_function_or_method' object has no attribute
'startswith'
And look at the error message: it tells you *exactly* what is wrong. You
have a built-in function or method, not a string.
Always read the full traceback. When you have to ask for help, always
copy and paste the full traceback.
--
Steve
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Re: [Tutor] why it is showing attribute error in line7
Please always post the full error text in future.
Meanwhile I'll guess:
On 29/10/16 05:42, SONU KUMAR wrote:
> fname = raw_input("Enter file name: ")
> if len(fname) < 1 : fname = "mbox-short.txt"
> fh = open(fname)
> count = 0
> for line in fh:
>line=line.rstrip
missing parens means you reassign line to the method.
>if not line.startswith("From"):continue
The method does not have a startwith attribute.
>lst=line.split()
Nor a split method.
>
>print lst[1]
>
>count=count+1
> print "There were", count, "lines in the file with From as the first word"
HTH
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
Follow my photo-blog on Flickr at:
http://www.flickr.com/photos/alangauldphotos
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[Tutor] why it is showing attribute error in line7
fname = raw_input("Enter file name: ")
if len(fname) < 1 : fname = "mbox-short.txt"
fh = open(fname)
count = 0
for line in fh:
line=line.rstrip
if not line.startswith("From"):continue
lst=line.split()
print lst[1]
count=count+1
print "There were", count, "lines in the file with From as the first word"
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