NameError: global name 'xticks' is not defined in graphlan_lib.py while running GraPhlAn

Question

[cvu]

Hello,

I have generated some results through HumanN and now I'm trying to visualise it using GraPhlAn.

graphlan_annotate.py --annot 04b-hit-keg-mpt-cop-nul-nve-nve-graphlan_rings.txt 04b-hit-keg-mpt-cop-nul-nve-nve-graphlan_tree.txt output.xml

I'm running above command and it's running correctly and I'm getting output.xml.

graphlan.py output.xml image.png --dpi 150 --size 7

While running this, I'm getting error

UserWarning:  This call to matplotlib.use() has no effect
because the the backend has already been chosen; 
matplotlib.use() must be called *before* pylab, matplotlib.pyplot, 
or matplotlib.backends is imported for the first time. 
  if warn: warnings.warn(_use_error_msg) 
Traceback (most recent call last): 
  File "graphlan.py", line 70, in <module> 
    external_legends = args['external_legends']) 
  File "/home/hd3/metagenomics_tools/graphlan/src/graphlan_lib.py", line 855, in draw 
    xticks([]) 
NameError: global name 'xticks' is not defined

Any help would be appreciated!

Thanks!

[GouthamAtla]

Whats the output of following commands?

python -c 'import matplotlib; xticks([])'
python -c 'import matplotlib.pyplot as plt; plt.xticks([])'

It may be version dependent. Check if you have same version of matplotlib required.

python -c 'import matplotlib; print matplotlib.__version__'