[Q] ImportError by __import__() on Python >= 3.4
Makoto Kuwata
kwa at kuwata-lab.com
Thu Jun 2 10:04:50 EDT 2016
Hi,
I have a trouble around __import__().
The following sample code works well on Python <= 3.3,
but it raises ImportError on Python >= 3.4.
## importtest.py
import sys, os, shutil
def test(name):
try:
## create 'foo/__init__.py' file
os.mkdir(name)
with open(name + "/__init__.py", 'w') as f:
f.write("X=1")
f.flush()
## ipmort 'foo' module
mod = __import__(name)
finally:
if os.path.isdir(name):
shutil.rmtree(name)
test("foo") # no errors
test("bar") # may raise error on Python >= 3.4. Why?
Output Example:
### No errors (Python <= 3.3)
ubuntu$ export PYTHONPATH=.
ubuntu$ for x in 1 2 3 ; do /usr/bin/python3.3 importtest.py; done
### ImportError (Python >= 3.4)
ubuntu$ export PYTHONPATH=.
ubuntu$ for x in 1 2 3 ; do /usr/bin/python3.4 importtest.py; done
Traceback (most recent call last):
File "tmp/importtest.py", line 19, in <module>
test("bar") # may raise error on Python >= 3.4. Why?
File "tmp/importtest.py", line 13, in test
mod = __import__(name)
ImportError: No module named 'bar'
Please give me any advices or hints.
Thanks.
--
regards,
makoto
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