Class NcbipsiblastCommandline

source code

                     object --+                
                              |                
Application.AbstractCommandline --+            
                                  |            
          _NcbibaseblastCommandline --+        
                                      |        
                  _NcbiblastCommandline --+    
                                          |    
                  _Ncbiblast2SeqCommandline --+
                                              |
                                             NcbipsiblastCommandline

Wrapper for the NCBI BLAST+ program psiblast.

With the release of BLAST+ (BLAST rewritten in C++ instead of C), the NCBI
replaced the old blastpgp tool with a similar tool psiblast. This wrapper
therefore replaces BlastpgpCommandline, the wrapper for blastpgp.

>>> from Bio.Blast.Applications import NcbipsiblastCommandline
>>> cline = NcbipsiblastCommandline(help=True)
>>> cline
NcbipsiblastCommandline(cmd='psiblast', help=True)
>>> print cline
psiblast -help

You would typically run the command line with cline() or via the Python
subprocess module, as described in the Biopython tutorial.

Create a new instance of a command line wrapper object.

Make sure the required parameters have been set (PRIVATE).

No return value - it either works or raises a ValueError.

This is a separate method (called from __str__) so that subclasses may
override it.