Fix doctests in base.py
Fix doctests in base.py

git-svn-id: 24f545668198cdd163a527378499f2123e59bf9f@565 ead46cd0-7350-4e37-8683-fc4c6f79bf00

carlohamalainen/nipype,gerddie/nipype,blakedewey/nipype,gerddie/nipype,arokem/nipype,mick-d/nipype_source,glatard/nipype,sgiavasis/nipype,grlee77/nipype,pearsonlab/nipype,grlee77/nipype,iglpdc/nipype,blakedewey/nipype,iglpdc/nipype,dmordom/nipype,FredLoney/nipype,Leoniela/nipype,wanderine/nipype,rameshvs/nipype,sgiavasis/nipype,grlee77/nipype,pearsonlab/nipype,dgellis90/nipype,wanderine/nipype,dmordom/nipype,fprados/nipype,mick-d/nipype_source,mick-d/nipype,gerddie/nipype,christianbrodbeck/nipype,glatard/nipype,rameshvs/nipype,dgellis90/nipype,sgiavasis/nipype,mick-d/nipype,blakedewey/nipype,arokem/nipype,JohnGriffiths/nipype,JohnGriffiths/nipype,FredLoney/nipype,arokem/nipype,Leoniela/nipype,JohnGriffiths/nipype,wanderine/nipype,rameshvs/nipype,FCP-INDI/nipype,mick-d/nipype_source,carolFrohlich/nipype,FCP-INDI/nipype,carolFrohlich/nipype,sgiavasis/nipype,dgellis90/nipype,JohnGriffiths/nipype,gerddie/nipype,iglpdc/nipype,glatard/nipype,FCP-INDI/nipype,fprados/nipype,fprados/nipype,mick-d/nipype,Leoniela/nipype,grlee77/nipype,iglpdc/nipype,satra/NiPypeold,blakedewey/nipype,pearsonlab/nipype,dgellis90/nipype,glatard/nipype,wanderine/nipype,carolFrohlich/nipype,FCP-INDI/nipype,dmordom/nipype,christianbrodbeck/nipype,FredLoney/nipype,arokem/nipype,satra/NiPypeold,carlohamalainen/nipype,carolFrohlich/nipype,rameshvs/nipype,pearsonlab/nipype,mick-d/nipype,carlohamalainen/nipype