Re: Reading Fortran Ascii output using python
On Monday, October 31, 2016 at 8:03:53 PM UTC+1, MRAB wrote:
> On 2016-10-31 17:46, Heli wrote:
> > On Monday, October 31, 2016 at 6:30:12 PM UTC+1, Irmen de Jong wrote:
> >> On 31-10-2016 18:20, Heli wrote:
> >> > Hi all,
> >> >
> >> > I am trying to read an ascii file written in Fortran90 using python. I
> >> > am reading this file by opening the input file and then reading using:
> >> >
> >> > inputfile.readline()
> >> >
> >> > On each line of the ascii file I have a few numbers like this:
> >> >
> >> > line 1: 1
> >> > line 2: 1000.834739 2000.38473 3000.349798
> >> > line 3: 1000 2000 5000.69394 99934.374638 54646.9784
> >> >
> >> > The problem is when I have more than 3 numbers on the same line such as
> >> > line 3, python seems to read this using two reads. This makes the above
> >> > example will be read like this:
> >> >
> >> > line 1: 1
> >> > line 2: 1000.834739 2000.38473 3000.349798
> >> > line 3: 1000 2000 5000.69394
> >> > line 4: 99934.374638 54646.9784
> >> >
> >> > How can I fix this for each fortran line to be read correctly using
> >> > python?
> >> >
> >> > Thanks in Advance for your help,
> >> >
> >> >
> >>
> >> You don't show any code so it's hard to say what is going on.
> >> My guess is that your file contains spurious newlines and/or CRLF
> >> combinations.
> >>
> >> Try opening the file in universal newline mode and see what happens?
> >>
> >> with open("fortranfile.txt", "rU") as f:
> >> for line in f:
> >> print("LINE:", line)
> >>
> >>
> >> Irmen
> >
> > Thanks Irmen,
> >
> > I tried with "rU" but that did not make a difference. The problem is a line
> > that with one single write statement in my fortran code :
> >
> > write(UNIT=9,FMT="(99g20.8)") value
> >
> > seems to be read in two python inputfile.readline().
> >
> > Any ideas how I should be fixing this?
> >
> > Thanks,
> >
> What is actually in the file?
>
> Try opening it in binary mode and print using the ascii function:
>
> with open("fortranfile.txt", "rb") as f:
> contents = f.read()
>
> print("CONTENTS:", ascii(contents))
Thanks guys,
I solved the problem on the Fortran side. Some lines contained new lines
characters that I fixed by setting format descriptors in Fortran.
Thanks for your help,
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Re: Reading Fortran Ascii output using python
On 2016-10-31 17:46, Heli wrote:
On Monday, October 31, 2016 at 6:30:12 PM UTC+1, Irmen de Jong wrote:
On 31-10-2016 18:20, Heli wrote:
> Hi all,
>
> I am trying to read an ascii file written in Fortran90 using python. I am
reading this file by opening the input file and then reading using:
>
> inputfile.readline()
>
> On each line of the ascii file I have a few numbers like this:
>
> line 1: 1
> line 2: 1000.834739 2000.38473 3000.349798
> line 3: 1000 2000 5000.69394 99934.374638 54646.9784
>
> The problem is when I have more than 3 numbers on the same line such as line
3, python seems to read this using two reads. This makes the above example will be
read like this:
>
> line 1: 1
> line 2: 1000.834739 2000.38473 3000.349798
> line 3: 1000 2000 5000.69394
> line 4: 99934.374638 54646.9784
>
> How can I fix this for each fortran line to be read correctly using python?
>
> Thanks in Advance for your help,
>
>
You don't show any code so it's hard to say what is going on.
My guess is that your file contains spurious newlines and/or CRLF combinations.
Try opening the file in universal newline mode and see what happens?
with open("fortranfile.txt", "rU") as f:
for line in f:
print("LINE:", line)
Irmen
Thanks Irmen,
I tried with "rU" but that did not make a difference. The problem is a line
that with one single write statement in my fortran code :
write(UNIT=9,FMT="(99g20.8)") value
seems to be read in two python inputfile.readline().
Any ideas how I should be fixing this?
Thanks,
What is actually in the file?
Try opening it in binary mode and print using the ascii function:
with open("fortranfile.txt", "rb") as f:
contents = f.read()
print("CONTENTS:", ascii(contents))
--
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Re: Reading Fortran Ascii output using python
On 31-10-2016 19:24, Irmen de Jong wrote: > So there must be something in that line in your file that it considers an EOF. I meant to type EOL there. (end-of-line/newline). Irmen -- https://mail.python.org/mailman/listinfo/python-list
Re: Reading Fortran Ascii output using python
On 31-10-2016 18:46, Heli wrote: > Thanks Irmen, > > I tried with "rU" but that did not make a difference. The problem is a line > that with one single write statement in my fortran code : > > write(UNIT=9,FMT="(99g20.8)") value > > seems to be read in two python inputfile.readline(). > > Any ideas how I should be fixing this? > > Thanks, > We don't speak Fortran here (at least I don't). Please show your Python code. What is 'inputfile'? Also, in Python, the readline method is defined as: >>> help(io.TextIOBase.readline) Help on method_descriptor: readline(...) Read until newline or EOF. Returns an empty string if EOF is hit immediately. So there must be something in that line in your file that it considers an EOF. Have you tried opening it in a regular text editor and inspecting what the characters are on that particular line? Irmen -- https://mail.python.org/mailman/listinfo/python-list
Re: Reading Fortran Ascii output using python
On Monday, October 31, 2016 at 6:30:12 PM UTC+1, Irmen de Jong wrote:
> On 31-10-2016 18:20, Heli wrote:
> > Hi all,
> >
> > I am trying to read an ascii file written in Fortran90 using python. I am
> > reading this file by opening the input file and then reading using:
> >
> > inputfile.readline()
> >
> > On each line of the ascii file I have a few numbers like this:
> >
> > line 1: 1
> > line 2: 1000.834739 2000.38473 3000.349798
> > line 3: 1000 2000 5000.69394 99934.374638 54646.9784
> >
> > The problem is when I have more than 3 numbers on the same line such as
> > line 3, python seems to read this using two reads. This makes the above
> > example will be read like this:
> >
> > line 1: 1
> > line 2: 1000.834739 2000.38473 3000.349798
> > line 3: 1000 2000 5000.69394
> > line 4: 99934.374638 54646.9784
> >
> > How can I fix this for each fortran line to be read correctly using python?
> >
> > Thanks in Advance for your help,
> >
> >
>
> You don't show any code so it's hard to say what is going on.
> My guess is that your file contains spurious newlines and/or CRLF
> combinations.
>
> Try opening the file in universal newline mode and see what happens?
>
> with open("fortranfile.txt", "rU") as f:
> for line in f:
> print("LINE:", line)
>
>
> Irmen
Thanks Irmen,
I tried with "rU" but that did not make a difference. The problem is a line
that with one single write statement in my fortran code :
write(UNIT=9,FMT="(99g20.8)") value
seems to be read in two python inputfile.readline().
Any ideas how I should be fixing this?
Thanks,
--
https://mail.python.org/mailman/listinfo/python-list
Re: Reading Fortran Ascii output using python
On 31-10-2016 18:20, Heli wrote:
> Hi all,
>
> I am trying to read an ascii file written in Fortran90 using python. I am
> reading this file by opening the input file and then reading using:
>
> inputfile.readline()
>
> On each line of the ascii file I have a few numbers like this:
>
> line 1: 1
> line 2: 1000.834739 2000.38473 3000.349798
> line 3: 1000 2000 5000.69394 99934.374638 54646.9784
>
> The problem is when I have more than 3 numbers on the same line such as line
> 3, python seems to read this using two reads. This makes the above example
> will be read like this:
>
> line 1: 1
> line 2: 1000.834739 2000.38473 3000.349798
> line 3: 1000 2000 5000.69394
> line 4: 99934.374638 54646.9784
>
> How can I fix this for each fortran line to be read correctly using python?
>
> Thanks in Advance for your help,
>
>
You don't show any code so it's hard to say what is going on.
My guess is that your file contains spurious newlines and/or CRLF combinations.
Try opening the file in universal newline mode and see what happens?
with open("fortranfile.txt", "rU") as f:
for line in f:
print("LINE:", line)
Irmen
--
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