HTML emailing in Python with variable number of variables [closed]

Answer 1

Using a templating language like Jinja2, you could use the following template:

  
  
    
The following changes have been made to the main page:
      
 Instruction IDs Added
      {% for instruction_id in added_instruction_ids %}
        Instruction ID #{{instruction_id.id}}
      {% endfor %}
      
 Instruction IDs Removed
      {% for instruction_id in removed_instruction_ids %}
        Instruction ID #{{instruction_id.id}}
      {% endfor %}
    

  

You could even achieve your "dynamic template" request by using if statements:

  
  
    
The following changes have been made to the main page:
      {% if len(added_instruction_ids) %}
      
 Instruction IDs Added
      {% endif %}
      {% for instruction_id in added_instruction_ids %}
        Instruction ID #{{instruction_id.id}}
      {% endfor %}
      {% if len(removed_instruction_ids) %}
      
 Instruction IDs Removed
      {% endif %}
      {% for instruction_id in removed_instruction_ids %}
        Instruction ID #{{instruction_id.id}}
      {% endfor %}
    

  

Note: the above examples assume that the following data is passed to the template engine:

{
  added_instruction_ids: [
    {
      id: X,
      url: link_to_url_of_instruction_id_X
    }, {
      id: Y,
      url: link_to_url_of_instruction_id_Y
    }
  ],
  removed_instruction_ids: [
    {
      id: A,
      url: link_to_url_of_instruction_id_A
    }
  ]
}