python - I have NoneType function return, how do I print/convert it in django views? -


i used lifelines library survival analysis, function called coxphfitter().print_summary() return nonetype object, here code in survat.py:

import pandas pd import numpy np import matplotlib.pyplot plt import lifelines lifelines import coxphfitter,aalenadditivefitter import os  def printcox(*args):     module_dir = os.path.dirname(__file__)  # current directory     file_path = os.path.join(module_dir, 'prostate1.csv')     prostate_dataset=pd.read_csv(file_path)     # prostate_dataset=pd.read_csv(args[0])     prostate_dataset=prostate_dataset[list(args[1:])]      x in prostate_dataset:         if (prostate_dataset[x].dtype=="object"):             cat=pd.series(list(prostate_dataset[x]))             y in pd.unique(cat):                 prostate_dataset[x+'.'+y]=pd.get_dummies(cat)[y]             prostate_dataset.drop(x, axis=1, inplace=true)     #        prostate_dataset=prostate     #        print prostate_dataset         else:             pass #    z in prostate_dataset: #                    print z     cf=coxphfitter()     cf.fit(prostate_dataset,args[1],event_col=args[2])     return cf.print_summary()

when called function in spyder , result's like: enter image description here

but when called in views.py , try print in .html, prints nothing because it's nonetype data, should deal this?

here views.py:

def listindex(request):     # handle file upload     if request.method == 'post':          form = documentform(request.post, request.files)         if form.is_valid():             newdoc = document(docfile = request.files['docfile'])             newdoc.save()             # ert= form.cleaned_data['aalenmember']             # redirect document list after post             return httpresponseredirect(reverse('survat.survatapp.views.listindex'))     else:         form = documentform() # empty, unbound form      # load documents list page     documents = document.objects.all()      def delete_matrix():         documents = document.objects.all()         document in documents:             document.delete()      if request.method == 'post':         tempcox = []         tempaalen = []         timecolumn = request.post.get('timecolumn', '')         tempcox.append(timecolumn)         tempaalen.append(timecolumn)         eventcolumn = request.post.get('eventcolumn', '')         tempcox.append(eventcolumn)         tempaalen.append(eventcolumn)         coxmember = request.post.get('coxmember', '')         aalenmember = request.post.get('aalenmember', '')         coxmemberi = int(float(coxmember))         aalenmemberi = int(float(aalenmember))         coxcovariate = []         aalencovariate = []         j in range(1,coxmemberi):             coxcovariate.append(request.post.get('coxcovariate'+str(j), ''))             tempcox.append(request.post.get('coxcovariate'+str(j), ''))         k in range(1,aalenmemberi):             aalencovariate.append(request.post.get('aalencovariate'+str(k), ''))             tempaalen.append(request.post.get('aalencovariate'+str(k), ''))         ert = request.post.get('coxmember', '')         ert = str(type(int(float(ert))))     else:         tempcox = []         tempaalen = []         ert = "niji"         timecolumn = "niji"         eventcolumn = "niji"         coxmember = "niji"         aalenmember = "niji"         coxmemberi = "niji"         aalenmemberi = "niji"         coxcovariate = []         aalencovariate = []         j in range(1,20):             coxcovariate.append ("niji")         k in range(1,20):             aalencovariate.append ("niji")      asdf=printcox('prostate1.csv','dtime','status1','age','hg','sz','sg','pf','rx')     # render list page documents , form     return render_to_response(         'survatapp/list.html',         {'documents': documents, 'form': form, 'ert':ert, 'wer':tempaalen,'asdf':asdf},         context_instance=requestcontext(request)     )

and called {{ asdf }} in .html

thanks in advance :)


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