call site 1 for code.Source.compile
code/testing/test_source.py - line 121
120
121
122
123
   def test_compile(self):
->     co = py.code.compile("x=3")
       exec co
       assert x == 3
code/source.py - line 213
203
204
205
206
207
208
209
210
211
212
213
214
   def compile_(source, filename=None, mode='exec', flags=
               generators.compiler_flag, dont_inherit=0):
       """ compile the given source to a raw code object,
           which points back to the source code through
           "co_filename.__source__".  All code objects
           contained in the code object will recursively
           also have this special subclass-of-string
           filename.
       """
       s = Source(source)
->     co = s.compile(filename, mode, flags)
       return co