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Tiny FASTA package, without dependencies, for processing biological sequence files.

Project description

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Python package for working with biological sequences from FASTA files.


  • Easy to use: intuitive API for parsing, searching and writing FASTA files
  • Lightweight: no dependencies outside Python’s standard library
  • Cross-platform: Linux, Mac and Windows are all supported
  • Works with with Python 2.7, 3.2, 3.3, and 3.4

Quick Guide

To install the TinyFasta package:

sudo pip install tinyfasta

To parse a FASTA file:

>>> from tinyfasta import FastaParser
>>> for fasta_record in FastaParser("tests/data/dummy.fasta"):
...     if fasta_record.description.contains('seq1'):
...         print(fasta_record)
>seq1|contains 2x78 A's

To create a FASTA record:

>>> from tinyfasta import FastaRecord
>>> sequence = "C" * 100
>>> fasta_record = FastaRecord.create("My Sequence", sequence)
>>> print(fasta_record)
>My Sequence

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