Supplying 13 arguments to a Python function taking variable arguments causes a clr.CompileModules failure; 12 arguements compiles fine. The failure message is:
 

SystemError: Unable to make a reference to a transient module from a non-transient module.

 

This first sample program works fine with 12 arguments to the variadic function:

 

Varargs1.py:

def Varargs( arg, *args, **kwargs ):

return "arg: %s\nargs: %s\nkwargs: %s" % ( arg, repr( args ), repr( kwargs ))

 

print Varargs( 'a', 1,2,3,4,5,6,7,8,9,10,11,12 )

 

Compiling successfully using pyc.py (which basically just invokes clr.CompileModule:

 
C:> ipy pyc.py /target:exe /main:Varargs1.py Varargs1.py
Input Files:

Varargs1.py

Output:

Varargs1

Target:

ConsoleApplication

Platform:

ILOnly

Machine:

I386

Compiling...
Saved to Varargs
 
C:>Varargs1
arg: a
args: (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
kwargs: {}
 
 
 

Adding one more argument (totalling 13) to the Varargs function call causes a clr.CompileModules failure:

 

Varargs2.py:

def Varargs( arg, *args, **kwargs ):

return "arg: %s\nargs: %s\nkwargs: %s" % ( arg, repr( args ), repr( kwargs ))

 

print Varargs( 'a', 1,2,3,4,5,6,7,8,9,10,11,12,13 )

C:> ipy pyc.py /target:exe /main:Varargs2.py Varargs2.py
 
 
Input Files:

Varargs2.py

Output:

Varargs2

Target:

ConsoleApplication

Platform:

ILOnly

Machine:

I386

Compiling...
Traceback (most recent call last):
 
File "c:/Program Files (x86)/IronPython 2.7/Tools/Scripts/pyc.py", line 159, in <module>
 
File "c:/Program Files (x86)/IronPython 2.7/Tools/Scripts/pyc.py", line 151, in Main
 
SystemError: Unable to make a reference to a transient module from a non-transient module.