Hello!
I noticed that the 'subdict' method in file Goulib/itertools2.py quoted a stack overflow answer, where a comment proposed that dict((k,bigdict.get(k,defaultVal) for k in wanted_keys) is better than dict([(i, d[i]) for i in keys if i in d]). (the url is here ) The original answer adopted it and modified the code.
I think it may help improve your code.
Have a nice day!

I tried to transform GeoGraph object result from graph.euclidean_minimum_spanning_tree to NetworkX but error has shown.

Euclidean Minimum Spanning Tree (EMST)

from Goulib import graph
points_emst = graph.euclidean_minimum_spanning_tree(points_array)
print(type(points_emst))

Convert GeoGraph to NetworkX object

graph.to_networkx_graph(points_emst, create_using='Geograph')

I found error "Input is not a correct NetworkX graph" when converting

Is there something I miss? Thanks in advance.

Hi, I was trying to read your dxf2img method, and when I visit your Ipython Notebook for basic info
http://nbviewer.ipython.org/github/Goulu/Goulib/blob/master/notebook.ipynb
I found its unavailable, could you fix it?

Thank you!

just found that several functions from .itertools2 exist in https://github.com/erikrose/more-itertools/ ...
check if/how to merge

Hi Phillipe,

I followed your presentation at the Microclub yesterday and I wanted to play with your notebook “python_finesses.ipynb”.

The problem I face is that this notebook requires Goulib which is not yet installed on my computer. I saw that you provide a pip installation of it, but sudo pip install Goulib raised an error on my Anaconda distribution (ModuleNotFoundError: No module named 'pip.req'). That is probably normal as on Anaconda I am supposed to use conda and not pip.

So the question is how to install Goulib on Anaconda for use in a Jupyter notebook.

By the way thank you for your presentation!

Nicolas

`from Goulib.drawing import *

d = Drawing("house design.dxf")`
Results in error
/.local/lib/python3.6/site-packages/Goulib/drawing.py in from_dxf(self, dxf, layers, only, ignore, trans, flatten)
682 t2 = trans*Trans(e.scale[:2], e.insert[:2], e.rotation)
683 if flatten:
--> 684 self.from_dxf(self.block[e.name].dxf, layers=None, ignore=ignore, only=None, trans=t2, flatten=flatten)
685 else:
686 self.append(Instance.from_dxf(e, self.block, t2))

AttributeError: 'Group' object has no attribute 'block'

When attempting to draw a simple spline I get the message:
WARNING:root:unhandled entity type SPLINE

Circle and lines are normally plotted.

Line used: Drawing("C:/Users/User1/Desktop/Draw1.DXF").

When attempting to import the Drawing class, I get the following:

Traceback (most recent call last):
  File "./cad_parser", line 31, in <module>
    from Goulib.drawing import Drawing as gl_draw
  File "/usr/local/lib/python2.7/dist-packages/Goulib/drawing.py", line 29, in <module>
    from .colors import color_to_aci, aci_to_color
  File "/usr/local/lib/python2.7/dist-packages/Goulib/colors.py", line 289, in <module>
    table=Table(path+'/colors.csv')
  File "/usr/local/lib/python2.7/dist-packages/Goulib/table.py", line 243, in __init__
    self.load(filename,**kwargs)
  File "/usr/local/lib/python2.7/dist-packages/Goulib/table.py", line 330, in load
    self.read_csv(filename,**kwargs)
  File "/usr/local/lib/python2.7/dist-packages/Goulib/table.py", line 428, in read_csv
    for i,row in enumerate(reader):
  File "/usr/local/lib/python2.7/dist-packages/Goulib/table.py", line 415, in csv_reader2
    with codecs.open(filename, 'rb', errors=errors) as f:
  File "/usr/lib/python2.7/codecs.py", line 878, in open
    file = __builtin__.open(filename, mode, buffering)
IOError: [Errno 2] No such file or directory: '/usr/local/lib/python2.7/dist-packages/Goulib/colors.csv'

The package was installed using pip. I've checked the folder, and colors.csv is not present. Possibly it isn't specified in the install directives?

(posted on http://stackoverflow.com/questions/33150125/repr-latex-method-not-working-anymore-in-jupyter-ipython-notebook )
I have an Expr class to represent mathematical expressions in which I defined

def _latex(self):
    """:return: string LaTex formula"""
    (...)
    return res

def _repr_latex_(self):
    return r'$%s$'%self._latex() #tried several variations of this...

@property
def latex(self):
    from IPython.display import Math
    return Math(self._latex())

as you can see on http://nbviewer.ipython.org/github/Goulu/Goulib/blob/master/notebook.ipynb at cell [42], latex is correctly rendered when explicitly specified by the property but fails next cell when called though repr_latex with a UnicodeDecodeError.

e2(e1)._latex() returns '\sin(3x+2)' with no unicode, so what's wrong here ? Thanks !

Goulib currently uses nose, via the tests.py module. Nose seems outdated, not maintained anymore.
Need to change for a more up-to-date package that has to provide:

• dynamic generation of tests
• xunit.xml output (for jenkins)

current contenders are nose2 and pytest.