Preserve newlines in file rendered to HTML with Jinja

Question

I am trying to print the content of a file in a web page. I want to print each line from the file on a separate line, but instead the line breaks are missing. How do I print the file and preserve newlines?

@app.route('/users')
def print_users():
    v = open("users.txt","r").read().strip()
    # also tried:
    # v = open("users.txt","r").read().strip().split('\n')
    return render_template('web.html', v=v)

{{ v|safe}}

Answer 1

You can use :

v = open("users.txt","r").readlines()
v = [line.strip() for line in v]

and then in your html something like (but feel free to play around with it):

<form action="/print_users"  method="post" >    
                    <div class="form-inline">

                  {% for line in v %}
                      <div>{{ line|safe}}</div>
                  {% endfor %}


    <input class="btn btn-primary" type="submit"  value="submit" > 
              </div>

                    </form>