>>> from imp import reload
>>> reload(script1)
Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    reload(script1)
NameError: name 'script1' is not defined

NameError: name 'script1' is not defined

import script1
from imp import reload
reload(script1)

>>> import script1
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    import script1
ImportError: No module named 'script1'

import imp
import file
imp.reload(file.script1)