#NEWLINE# def _param_populator( self , src , t_offset = 0 ) : #NEWLINE# #INDENT# 'Returns a `getter` function that returns either\n        (x, t)-specific values for parameters that define such, or\n        always the same static value if only a static value is given.\n\n        ' #NEWLINE# def getter( m , y , x , t ) : #NEWLINE# #INDENT# if isinstance ( src [ y ] , pd . core . frame . DataFrame ) : #NEWLINE# #INDENT# return float ( src [ y ] . loc [ ( ( t + t_offset ) , x ) ] ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# return float ( src [ y ] ) #NEWLINE# #UNINDENT# #UNINDENT# return self