ImportError: cannot import name 'G' - (python3.5)

[selvincephus]

I am trying out mecode for the first time and using python3.5 for this. I have followed the install instructions corresponding to source install in the readme file. After the install I tried the following line in the command line on Ubuntu 16.04, I get the following error. I read an earlier issue where a python 3.4 compatibility was talked about, but has there been any update in this direction since? Or is mecode not compatible with python3 generally?

~$ python3
Python 3.5.2 (default, Nov 17 2016, 17:05:23) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from mecode import G
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name 'G'

[jminardi]

Did you name your python file mecode.py?

[selvincephus]

I am assuming, when you refer to my python file, you mean a python script I've written using mecode APIs? The above example is only command line script in a linux terminal. I have not written it in a separate file. Python 2 scripts work like a charm. For example, this is using python2

$ python2
Python 2.7.12 (default, Nov 19 2016, 06:48:10)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from mecode import G
>>>

It successfully imports G from mecode.

And this is using python3,

$ python3
Python 3.5.2 (default, Nov 17 2016, 17:05:23) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from mecode import G
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name 'G'
>>> 

[jminardi]

Hmm, thats odd. I would guess there is some sort of install error. The tests are passing on python 3.4 and python 3.5:

https://travis-ci.org/jminardi/mecode

I am curious what is available under mecode when you import it. Can you let me know the output of the following?

import mecode
print(dir(mecode))

[selvincephus]

This is what it gives.

~$ python3
Python 3.5.2 (default, Nov 17 2016, 17:05:23) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import mecode
>>> print(dir(mecode))
['__doc__', '__loader__', '__name__', '__package__', '__path__', '__spec__']
>>> 

[selvincephus]

Interesting that the python2 gives the following output.

$ python2
Python 2.7.12 (default, Nov 19 2016, 06:48:10) 
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import mecode
>>> print(dir(mecode))
['G', 'GMatrix', '__builtins__', '__doc__', '__file__', '__name__', '__package__', '__path__', 'decode2To3', 'is_str', 'main', 'matrix', 'printer']
>>> 

[jminardi]

Yeah the second one is what is expected. Were there any error messages when you installed in python 3?

[selvincephus]

It works now! I think I previously did not install mecode using python3 and pip3 in the following install steps,

$ pip install -r requirements.txt
$ python setup.py install

Thanks a ton!

Also, if I had some questions while using mecode, do I create a new issue or contact you some other way?

[jminardi]

Great! If you have questions feel free to open another issue.

[bioeng9]

I only have Python 3 (I have 3.7.2) and I get the same readout as selvincephus does when using import mecode and print.

I installed mecode into my Downloads and extracted all, then places in the Lib folder of my python directory. I must be missing something in terms of the install

[bioeng9]

jminardi I am pretty new to this. where do I install?

[jminardi]

@bioeng9 Sorry I never saw this as it is on a closed issue.

To install with python 3:

python3 -m pip install mecode

If you are still having trouble, please open another issue