'URLPattern' Object is not a mapping

Getting this error and the urls.py of my model is as shown below:

from django.conf.urls import url

from new import views

app_name = 'new'

urlpatterns = [

url(r'^export/csv/$', views.export_users_csv, name='export_users_csv'),

# url(r'^$', views.upload, name='uplink'),

url(r'^download/(.*)', views.download, name="download"),

url(r'^download_attachment/(.*)/(.*)', views.download_as_attachment,

name="download_attachment"),

url(r'^exchange/(.*)', views.exchange, name="exchange"),

url(r'^parse/(.*)', views.parse, name="parse"),

url(r'^import/', views.import_data, name="import"),

url(r'^import_sheet/', views.import_sheet, name="import_sheet"),

url(r'^export/(.*)', views.export_data, name="export"),

url(r'^handson_view/', views.handson_table, name="handson_view"),

# handson table view

url(r'^embedded_handson_view/',

views.embed_handson_table, name="embed_handson_view"),

url(r'^embedded_handson_view_single/',

views.embed_handson_table_from_a_single_table,

name="embed_handson_view"),

# survey_result

# url('^survey_result/',

# views.survey_result, name='survey_result'),

# testing purpose

url(r'^import_using_isave/',

views.import_data_using_isave_book_as),

url(r'^import_sheet_using_isave/',

views.import_sheet_using_isave_to_database),

url(r'^import_without_bulk_save/',

views.import_without_bulk_save, name="import_no_bulk_save")

]

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