The Python 3.3 equivalent of 'execfile' -

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i need find out how open .py files after writing them in notepad++. find interface more useful python window.

in tutorial following along guy uses

execfile(pathway)

but execfile not work in 3.3.

is there equivalent statement in 3.x?

open file, read it, , pass contents exec:

with open('file.py') source_file:     exec(source_file.read())

DIs