python - Trying to use a access a variable in another scope after render_template() (Flask)? -

i'm trying create web app uses form (wtforms) take 2 svn urls , something/displays them. have update button if clicked only display table info along another submit button function (using show=true given render_template)

views.py:

@app.route('/test4', methods=['get','post']) def test4():      form1=svn_path()     form2=inputs()     if request.method=="post":         if request.form.get('updatepaths')=='update' , form1.validate_on_submit():         --> basepath=createdir()             svn_url1 = form1.svn_url1.data             svn_url2 = form1.svn_url2.data         --> prev_pdf=pdf_list(svn_url1,basepath,'prev')  #function generates list             new_pdf=pdf_list(svn_url2,basepath,'new')   #function generates list             options=[("none","none")]+[(pdf,pdf) pdf in new_pdf]             sub_form in form2.files:                 sub_form.choices= options                 sub_form.default="none"             return render_template('test4.html',form1=form1,form2=form2,show=true,numfiles=len(prev_pdf),pdflist=prev_pdf)         elif request.form.get('batchfiles')=='submit':             #i want use prev_pdf , basepath in part out of scope     else:         return render_template('test4.html',form1=form1,form2=form2) 

the elif portion : elif request.form.get('batchfiles')=='submit': second submit appear when first submit clicked, however,

the problem arises when: in section of code want use basepath , prev_pdf out of scope since returned render_template @ end of first if statement. can't access form1.svn_url1.data anymore either can't recall function.

i can't think of way format code or solution solve problem appreciated.

what you're trying possible if store prev_pdf somewhere can accessed in next request. suggest either storing list (prev_pdf) in flask session or storing svn_url1 can regenerate list on second request. see this example of how use flask sessions.

the reason need save data have discovered, each http request self contained , "isolated" previous requests way communicate between requests either pass information want client each time, or save information on server side , access each request.