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"Module providing execfile forward compatibility with new python versions"
def execfile(filename, myglobals=None, mylocals=None):
"""
Read and execute a Python script from a file in the given namespaces.
The globals and locals are dictionaries, defaulting to the current
globals and locals. If only globals is given, locals defaults to it.
"""
try:
from collections.abc import Mapping
except:
from collections import Mapping
import inspect
if myglobals is None:
# There seems to be no alternative to frame hacking here.
caller_frame = inspect.stack()[1]
myglobals = caller_frame[0].f_globals
mylocals = caller_frame[0].f_locals
elif mylocals is None:
# Only if myglobals is given do we set mylocals to it.
mylocals = myglobals
if not isinstance(myglobals, Mapping):
raise TypeError('globals must be a mapping')
if not isinstance(mylocals, Mapping):
raise TypeError('locals must be a mapping')
with open(filename, "rb") as fin:
source = fin.read()
code = compile(source, filename, "exec")
## TODO: maybe try deepcopy of myglobals, mylocals so that execfile does not modify the original globals and locals
exec(code, myglobals, mylocals)
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