I have two .py files (not in the library) in the same directory where one
imports the other. I'd like to run doctests, but the local directory does not
seem to be in the search path. Is there any way of doing this apart from
fiddling around with sys.path in the .py files themselves?

Minimal example:


        sage: bar()

def bar():
    print "Bar"

        sage: foo()
        sage: bar()

from b import bar

def foo():
    print "Foo"
$ sage -t .
too many failed tests, not using stored timings
Running doctests with ID 2016-09-20-13-38-33-1ca61f3e.
Using --optional=ccache,mpir,python2,sage
Doctesting 2 files.
sage -t a.py
    ImportError in doctesting framework
Traceback (most recent call last):
line 2128, in __call__
    doctests, extras = self.source.create_doctests(sage_namespace)
line 670, in create_doctests
    load(filename, namespace) # errors raised here will be caught in DocTestTask
"/local/sage/sage-7.3/local/lib/python2.7/site-packages/sage/repl/load.py", line
271, in load
    exec(code, globals)
  File "./a.py", line 13, in <module>
    from b import bar
ImportError: No module named b

sage -t b.py
    [1 test, 0.00 s]
sage -t a.py  # ImportError in doctesting framework
Total time for all tests: 0.0 seconds
    cpu time: 0.0 seconds
    cumulative wall time: 0.0 seconds

When I add

import sys

to a.py, it works; but I'd prefer not to have to modify a.py.

Thank you,


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