---
name: "Bio::SeqIO::Fasta"
section: "3pm"
platform: "linux"
package: "bioperl"
version: "0.05.1-1"
release: "Debian 2.2 (Potato)"
platforms: ["linux"]
url: "https://new.carta.tech/Bio::SeqIO::Fasta"
---

# Bio::SeqIO::Fasta(3pm)

Bio::SeqIO::Fasta - Fasta sequence input/output stream It is probably best not to use this object directly, but rather go through the SeqIO handler system. Go:

```
    $stream = Bio::SeqIO->new(-file => $filename, -format => 'Fasta');
```

```
    while $seq ( <$stream> ) {
        # $seq is a Bio::Seq object
    }
```

This object can transform Bio::Seq objects to and from fasta flat file databases.\
 **Mailing Lists** User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably\
  to one of the Bioperl mailing lists. Your participation is much appreciated.

```
  vsns-bcd-perl@lists.uni-bielefeld.de          - General discussion
  vsns-bcd-perl-guts@lists.uni-bielefeld.de     - Technically-oriented discussion
  http://bio.perl.org/MailList.html             - About the mailing lists
```

**Reporting Bugs** Report bugs to the Bioperl bug tracking system to help us keep track\
  the bugs and their resolution.\
  Bug reports can be submitted via email or the web:

```
  bioperl-bugs@bio.perl.org
  http://bio.perl.org/bioperl-bugs/
```

Email birney@sanger.ac.uk Describe contact details here The rest of the documentation details each of the object methods. Internal methods are usually preceded with a \_\
 **next\_seq**

```
 Title   : next_seq
 Usage   : $seq = $stream->next_seq()
 Function: returns the next sequence in the stream
 Returns : Bio::Seq object
 Args    :
```

**write\_seq**

```
 Title   : write_seq
 Usage   : $stream->write_seq($seq)
 Function: writes the $seq object into the stream
 Returns : 1 for success and 0 for error
 Args    : Bio::Seq object
```

**\_filehandle**

```
 Title   : _filehandle
 Usage   : $obj->_filehandle($newval)
 Function:
 Example :
 Returns : value of _filehandle
 Args    : newvalue (optional)
```