Sequence.py is a Python script I use to iterate over HTML elements creating a large block of sequential elements from a template. I use it mostly with Shopify were there aren't always methods for looping over repeated elements.

element-template.html

<div class="element" id="element-{{}}">
  <span>Some stuff goes here. And it is sequential ... item #{{}}.</span>
</div>

elements.html

<div class="element" id="element-1">
  <span>Some stuff goes here. And it is sequential ... item #1.</span>
</div>
<div class="element" id="element-2">
  <span>Some stuff goes here. And it is sequential ... item #2.</span>
</div>
<div class="element" id="element-3">
  <span>Some stuff goes here. And it is sequential ... item #3.</span>
</div>

sequence.py

#! /usr/local/bin/python3

import sys

class Arguments:
    def __init__(self):
        self.argv = sys.argv
        self.file()
        self.iterations()
    def file(self):
        return self.argv[1]
    def iterations(self):
        try: 
            int(self.argv[2])
        except:
            print('Error: iterations')
            sys.exit()

class Sequence:
    def __init__(self, f, i):
        try:
            self.file = open(f)
            self.html = self.file.read()
        except:
            print('Error: file')
            sys.exit()
        self.iterations = i
    def do(self):
        for x in range(1,self.iterations):
            itTag = str(x)
            newHtml = self.html.replace('{{}}', itTag)
            print(newHtml)

def main():
    arg = Arguments()
    seq = Sequence(arg.argv[1], int(arg.argv[2])+1)
    seq.do()

if __name__ == "__main__": main()

usage.txt

Here's how I use this. First, I'll create a template in a file in the directory with the script. Let's say I call that element-template.html. I use the placeholder `{{}}` in places where I want the sequence key to be placed.

Then I'll touch a file for the output and call it elements.html.

Then I put the script and output it to the elements.html file:

./sequence.py element-template.html 3 >> elements.html

And that gives me the result that I'll copy and paste into my Shopify theme or settings file.

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Note that to use this yourself, you'll need to chmod 755 the file and set the #! line at the beginning of the file to the path of your own Python3 interpreter.