import csv
import re

listtuple = []
linelist = []
count = 0
with open('./Workflows_js_nodes.js', 'r') as file:
    for num, line in enumerate(file, 1):
        if "<<<" in line:
            linelist.append(num)
        if ">>>" in line:
            linelist.append(num)
linelist = sorted(linelist)
x = len(linelist)

try:
    while count in range(x):
        count += 1
        temp_tupe = (linelist[0], linelist[1])
        listtuple.append(temp_tupe)
        linelist.pop(0)
        linelist.pop(1)
except IndexError as e:
    print(e)

print(listtuple)