3 d@s.dZddlZddlmZddZdddZdS) zy Handles custom functions used in Function interface. Future imports are avoided to keep namespace as clear as possible. N)dedentcCsttj|S)z%Returns the source code of a function)rinspect getsource)functionr8/tmp/pip-build-7vycvbft/nipype/nipype/utils/functions.pyr src Csi}g}y:|dk r6x|D]}t||qWt|j}t||Wn>tk r}z"dj|}|d7}t||WYdd}~XnXtt|t|dg}t|dkstd||d}|S)aAReturn a function object from a function source Parameters ---------- function_source : unicode string unicode string defining a function imports : list of strings list of import statements in string form that allow the function to be executed in an otherwise empty namespace NzError executing function {} zFunctions in connection strings have to be standalone. They cannot be declared either interactively or inside another function or inline in the connect string. Any imports should be done inside the function. __builtins__z"Function or inputs are ill-definedr) execlistkeys Exceptionformat RuntimeErrorsetlenAssertionError) Zfunction_sourceZimportsnsZ import_keysZ statementemsgZns_funcsfuncrrrcreate_function_from_sources"     r)N)__doc__rtextwraprrrrrrrs