Getting Started

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m (Quick example: Fixed silly error introduced in the last revision)
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from Bio.Seq import Seq
 
from Bio.Seq import Seq
  
#create a sequence object of some DNA
+
#create a sequence object
 
my_seq = Seq('CATGTAGACTAG')
 
my_seq = Seq('CATGTAGACTAG')
  
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protein translation is HVD*
 
protein translation is HVD*
 
</pre>
 
</pre>
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 +
This was a very quick demonstration of Biopython's [[Seq]] (sequence) object and some of its methods.
  
 
==Reading and writing Sequence Files==
 
==Reading and writing Sequence Files==

Revision as of 17:16, 19 March 2009

Contents

Download and Installation

For Windows we provide click-and-run installers. Most Linux distributions will include an optional Biopython package (although this may be out of date). Otherwise you typically download and uncompress the archive, and install from source. See our downloads page for details including the prerequisites.

You can check your installation has worked at the python prompt:

>>> import Bio

If that gives no error, you should be done. If you get something like "ImportError: No module named Bio" something has gone wrong.

Tutorial

The Biopython Tutorial and Cookbook (HTML, PDF) contains the bulk of our documentation. See Documentation for more links.

Quick example

Try executing this in python:

from Bio.Seq import Seq
 
#create a sequence object
my_seq = Seq('CATGTAGACTAG')
 
#print out some details about it
print 'seq %s is %i bases long' % (my_seq, len(my_seq))
print 'reverse complement is %s' % my_seq.reverse_complement()
print 'protein translation is %s' % my_seq.translate()

You should get the following output:

seq CATGTAGACTAG is 12 bases long
reverse complement is CTAGTCTACATG
protein translation is HVD*

This was a very quick demonstration of Biopython's Seq (sequence) object and some of its methods.

Reading and writing Sequence Files

If you are using Biopython 1.43 or later, try out the new SeqIO module.

Beginners

Further reading

  • Use the Wiki Search tools to find more information on specific topics.
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