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Reverse for 'edit' with no arguments not found. 1 pattern(s) tried: ['edit/(?P<page>[^/]+)$']

I'm trying to code wiki plagia. But I got this unexpected error: Reverse for 'edit' with no arguments not found. 1 pattern(s) tried: ['edit/(?P[^/]+)$']. So there is the page of the Python Function who redirect it.
{% extends "encyclopedia/layout.html" %}
{% block title %}
Encyclopedia
{% endblock %}
{% block body %}
<form method=POST action="{% url 'edit' %}">
{% csrf_token %}
<label>The Title Of Your Wiki Page</label>
<input type="text" name="Title" value="None">
<label>The Content Of Your Wiki Page</label>
<input type="text" name="Content" value="None">
<input type="submit" value="Submit Your Wiki Page" value="None">
</form>
{% endblock %}
And there is my Python Function :
def edit(request):
print(page)
return render(request,"encyclopedia/edit.html")
The path fuction in urls.py:
path("edit/<str:page>", views.edit, name="edit")
Th wiki.html page who redirect to the edit function:
{% extends "encyclopedia/layout.html" %}
{% block title %}
Encyclopedia
{% endblock %}
{% block body %}
{{content|safe}}
<form action="/edit/{{name}}" method="POST">
{% csrf_token %}
<input type="submit" value="Edit">
</form>
{% endblock %}

There are few errors in your code
You need to provide an argument to the editfunction i.e.page since the url path("edit/<str:page>", views.edit, name="edit") is passing a parameter <str:page> to the function
def edit(request, page):
print(page)
return render(request,"encyclopedia/edit.html")
You need to provide argument to the URL {% url 'edit' %} in the template
{% url 'edit' argument %}

NoReverseMatch at - django polls app tutorial

I keep getting this when trying to load da page:
NoReverseMatch at /polls/
Reverse for 'vote' with arguments '('',)' not found. 1 pattern(s) tried: ['polls/(?P<question_id>[0-9]+)/vote/$']
In template C:\Users\sarah\Desktop\django2\myproject\my_site\polls\templates\polls\index.html, error at line 20
line 20:
<form action="{% url 'polls:vote' question.id %}" method="post">
I am a complete beginner at django, css, html, ... I kept checking in with the tutorial, comparing my code with the code reference in the tutorial, however I see no mistake.
My index.html:
{% load static %}
<link rel="stylesheet" type="text/css" href="{% static 'polls/style.css' %}">
{% if latest_question_list %}
<ul>
{% for question in latest_question_list %}
<li>{{ question.question_text }}</li>
{% endfor %}
</ul>
{% else %}
<p>No polls are available.</p>
{% endif %}
<h1>{{ question.question_text }}</h1>
{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
<form action="{% url 'polls:vote' question.id %}" method="post">
{% csrf_token %}
{% for choice in question.choice_set.all %}
<input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}">
<label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br>
{% endfor %}
<input type="submit" value="Vote">
</form>
The vote function in views.py:
def vote(request, question_id):
question = get_object_or_404(Question, pk=question_id)
try:
selected_choice = question.choice_set.get(pk=request.POST['choice'])
except (KeyError, Choice.DoesNotExist):
# Redisplay the question voting form.
return render(request, 'polls/detail.html', {
'question': question,
'error_message': "You didn't select a choice.",
})
else:
selected_choice.votes += 1
selected_choice.save()
return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))
urls.py:
from django.urls import path
from . import views
app_name = 'polls'
urlpatterns = [
path('', views.IndexView.as_view(), name='index'),
path('<int:pk>/', views.DetailView.as_view(), name='detail'),
path('<int:pk>/results/', views.ResultsView.as_view(), name='results'),
path('<int:question_id>/vote/', views.vote, name='vote'),
Thank you.

The main reason here is you are using your index.html with the form where you should really have this in polls/detail where you have access to a question object by pk. Right now you are trying to access the id property of question but question is undefined in your index.html.
Place the following in your polls/details.html
<h1>{{ question.question_text }}</h1>
<form action="{% url 'polls:vote' question.id %}" method="post">
{% csrf_token %}
{% for choice in question.choice_set.all %}
<input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}">
<label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br>
{% endfor %}
<input type="submit" value="Vote">
</form>
Then, navigate to polls/1 or whatever question.id you want and then try and use the form.

Reverse for 'django_markdown_preview' with arguments '()' and keyword arguments '{}' not found. 0 pattern(s) tried: []

I am using django_markdown but it is showing error when I am trying to render form. The error is on 17th line {{ form }} Error. The error is in reverse of 'django_markdown_preview', but I have included
url('^markdown/', include('django_markdown.urls')),
in my urls.py. Can anyone help me to resolve the error.
{% extends 'qaforum/base.html' %}
{% load django_markdown %}
{% block content %}
{% if message %}
<strong>Enter a valid Question!</strong>
{% endif %}
<form method="post" action="{% block action_url %}{% url 'qaforum:qaforum_create_question' %}{% endblock action_url %}">
{% csrf_token %}
{% for field in form.visible_fields %}
<tr>
<th>{{ field.label_tag }}</th>
<td>
{{ field.errors }}
{{ field }}
{{ field.help_text }}
</td>
</tr>
{% endfor %}
<input class="btn pull-right btn-success" type="submit" value="Submit Question" />
</form>
</div>
{% endblock content %}
{% block extra_js %}
{% markdown_editor "#id_description" %}
{% markdown_media %}
{% endblock extra_js %}

Django NoReverseMatch while return render()

I always receive a NoReverseMatch error, and I don't know why.
This is the error message:
NoReverseMatch at /suche/any-thing/
Reverse for 'article_search' with arguments '(u'any thing',)' not found. 1 pattern(s) tried: ['suche/(?P[-\w]+)/$']
So as you can see, I'm entering a url with "-" instead of whitespace, but Django is looking for url pattern with the space instead of "-".
This is my url pattern:
url(r'suche/(?P<search>[-\w]+)/$', views.article_search_view, name='article_search'),
Surprisingly Django starts to compute my article_search_view, which looks like this:
def article_search_view(request, search=None):
"""Filters all articles depending on the search and renders them"""
articles = get_active_not_rented_articles()
search = re.sub(r"[-]", ' ', search)
articles = articles.filter(title__icontains=search)
articles = aply_sort(request, articles)
orderd_by = articles[0].get('filter')
articles = articles[1]
return render(request, 'article/list.html', {'object_list':articles, 'url_origin':'article_search', 'parameter':search,
'orderd_by':orderd_by})
As I checked with "print()" statements, the error is raised when the return render(...) statement is called.
If I do a return redirect(...) instead, no error will be raised.
For completeness, my article/list.html template:
{% extends "base.html" %}
{% load static %}
{% block content %}
<div id =articles>
<div class="info_filter">
<div class="header_info_filter">
{% if orderd_by == "not" %}
<h1>Neueste Artikel</h1>
{% endif %}
{% if orderd_by == "distance" %}
<h1>Artikel in Ihrer Nähe</h1>
{% endif %}
{% if orderd_by == "price_asc" %}
<h1>Günstigste Artikel zuerst</h1>
{% endif %}
{% if orderd_by == "price_des" %}
<h1>Teuerste Artikel zuerst</h1>
{% endif %}
</div>
<div class="selection">
{% if parameter1 %}
<form action="{% url url_origin parameter1 parameter2 %}" method="post" accept-charset="utf-8">
{% else %}
{% if parameter %}
<form action="{% url url_origin parameter %}" method="post" accept-charset="utf-8">
{% else %}
<form action="{% url url_origin %}" method="post" accept-charset="utf-8">
{% endif %}
{% endif %}
{% csrf_token %}
<div class="select_filter">
<select name="filter" id="filter" >
<option value="distance">Entfernung</option>
<option value="price_asc">Preis, aufsteigend</option>
<option value="price_des">Preis, absteigend</option>
</select>
<div class="search_filter_btn">
<button type="submit" name="button">Sortieren</button>
</div>
</div>
</form>
</div>
{% if parent_categorys %}
<div class="category-path">
Ergebnisse für:
{% for category in parent_categorys %}
> {{ category.name }}
{% endfor %}
{% if parameter2 %}
: {{ parameter2}}
{% endif %}
</div>
{% else %}
Ergebnisse für: {{ parameter}}
{% endif %}
</div>
<div id="main" class="article_list">
{% for article in object_list %}
<div class="item">
<div class="list_img">
<a href="{{ article.get_absolute_url }}">
<img src="{% if article.main_picture %}{{ article.main_picture.url }}{% else %}{% static "img/no_image.png" %}{% endif %}">
</a>
</div>
<div class= "articles_fee" >
{{ article.fee }} €
</div>
{{ article.title }}
</div>
{% endfor %}
</div>
</div>
{% endblock %}
Let me know if you need more information.

In your view, you change search and replace hyphens with spaces. This causes an error when you use the url tag in your template, because the URL pattern does not allow spaces.
{% url url_origin parameter %}
You could fix the problem by adding the original search slug to the template context:
def article_search_view(request, search=None):
"""Filters all articles depending on the search and renders them"""
search_slug = search
articles = get_active_not_rented_articles()
search = re.sub(r"[-]", ' ', search)
...
return render(request, 'article/list.html', {'object_list':articles, 'url_origin':'article_search', 'parameter':search, 'search_slug': search_slug, 'orderd_by':orderd_by})
Then change the url tag:
{% url url_origin search_slug %}

NoReverseMatch at /polls/1/vote/ when following Django's official tutorial

I'm following the Django tutorial. I've reached part 4, at the moment of building the vote form. Sadly, I cannot find the problem that is causing the following error:
NoReverseMatch at /polls/1/vote/
Reverse for 'vote' with arguments '('',)' and keyword arguments '{}' not found. 1 pattern(s) tried: [u'polls/(?P[0-9]+)/vote/$']
Both /polls/1/vote and /polls/1/ throw the error above.
My polls/urls.py
from django.conf.urls import url
from . import views
app_name = 'polls'
urlpatterns = [
url(r'^$', views.index, name='index'),
url(r'^(?P<question_id>[0-9]+)/$', views.details, name='details'),
url(r'^(?P<question_id>[0-9]+)/results/$', views.results, name='results'),
url(r'^(?P<question_id>[0-9]+)/vote/$', views.vote, name='vote'),
]
And here's the details.html, which shows the error at line 11, the form opening tag:
<h1>{{ question.question }}</h1>
{% if error %}
<p>
<strong>
{{ error }}
</strong>
</p>
{% endif %}
<form action="{% url 'polls:vote' question_id %}" method="POST">
{% csrf_token %}
{% for choice in question.choice_set.all %}
<input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}"/>
<label for="choice{{ forloop.counter }}">{{ choice.choice }}</label>
<br/>
{% endfor %}
<input type="submit" value="Vote">
</form>