Nikhil wrote:
> I am reading a file with readlines method of the filepointer object
> returned by the open function. Along with reading the lines, I also need
> to know which line number of the file is read in the loop everytime.
> I am sure, the line should have the property/attribute which will say
> the line number of the file.

> If there is none, do I have to end up using the counter in the loop?

> fp = open("file", "r")
> lineno = 0
> for line in fp.readlines():
>     print "line number: " + lineno + ": " + line.rstrip()
>         lineno = lineno + 1

Nikhil <mnik...@gmail.com> writes:
> Hi,

> I am reading a file with readlines method of the filepointer object
> returned by the open function. Along with reading the lines, I also
> need to know which line number of the file is read in the loop
> everytime.
> I am sure, the line should have the property/attribute which will say
> the line number of the file.

> If there is none, do I have to end up using the counter in the loop?

> fp = open("file", "r")
> lineno = 0
> for line in fp.readlines():
>    print "line number: " + lineno + ": " + line.rstrip()
>         lineno = lineno + 1

Arnaud Delobelle wrote:
> Nikhil <mnik...@gmail.com> writes:

>> Hi,

>> I am reading a file with readlines method of the filepointer object
>> returned by the open function. Along with reading the lines, I also
>> need to know which line number of the file is read in the loop
>> everytime.
>> I am sure, the line should have the property/attribute which will say
>> the line number of the file.

>> If there is none, do I have to end up using the counter in the loop?

>> fp = open("file", "r")
>> lineno = 0
>> for line in fp.readlines():
>>        print "line number: " + lineno + ": " + line.rstrip()
>>         lineno = lineno + 1

> The standard Python way is using enumerate()

> for i, line in enumerate(fp):
>     print "line number: " + lineno + ": " + line.rstrip()

Arnaud Delobelle wrote:
> Nikhil <mnik...@gmail.com> writes:

>> Hi,

>> I am reading a file with readlines method of the filepointer object
>> returned by the open function. Along with reading the lines, I also
>> need to know which line number of the file is read in the loop
>> everytime.
>> I am sure, the line should have the property/attribute which will say
>> the line number of the file.

>> If there is none, do I have to end up using the counter in the loop?

>> fp = open("file", "r")
>> lineno = 0
>> for line in fp.readlines():
>>        print "line number: " + lineno + ": " + line.rstrip()
>>         lineno = lineno + 1

> The standard Python way is using enumerate()

> for i, line in enumerate(fp):
>     print "line number: " + lineno + ": " + line.rstrip()

Arnaud Delobelle wrote:
> The standard Python way is using enumerate()

> for i, line in enumerate(fp):
>     print "line number: " + lineno + ": " + line.rstrip()

Nikhil <mnik...@gmail.com> writes:
> Arnaud Delobelle wrote:

>> The standard Python way is using enumerate()

>> for i, line in enumerate(fp):
>>     print "line number: " + lineno + ": " + line.rstrip()

> I guess you meant to say :

>  for lineno, line in enumerate(fp):
>      print "line number: " + lineno + ": " + line.rstrip()

>> Is there any way to have enumerate() start at 1 vs. 0?

>> The problem with starting at 0 is that many things in the real world
>> begin at 1 - like line numbers or labels in a list.
> I suppose you could redefine enumerate to support an optional argument:

> from itertools import izip, count

> def enumerate(iterable, start=0):
>      return izip(count(start), iterable)

>  >>> list(enumerate('spam', 1))
> [(1, 's'), (2, 'p'), (3, 'a'), (4, 'm')]