Moved missing name recording into the importer, testing for name identification
failure in the main program.
1a=4 2 3deff(x): 4defg(): 5y=2# used to initialise h 6defh(z): 7returnx,y,z,a 8y=5# Python uses this value directly from g in h 9returnh 10returng 11 12result=f(1)()(3) 13assertresult==(1,2,3,4)# (1, 5, 3, 4) in Python