obsidian_dataview_regex.py

import re

text = "[hello:: world]\n[key:: value]\n[testing::1]\n[listing::1,2,3]"

# Caveat: These regex only work with one field on a line
#         and cannot have two or more in the same line.
key_regex = r"(?!\[).*(?:(?=\:\:))"
value_regex = r"(?:(?<=\:\:)(.*)(?=\]))"

# Save values to a list
vals = re.findall(value_regex, text)
values = []
for val in vals:
    if re.search(r",", val):
        val = [v.strip() for v in (val.split(","))]
        values.append(val)
    else:
      values.append(val.strip())

# Save keys to a list
fkeys = re.findall(key_regex, text)
keys = []
for k in fkeys:
  keys.append(k.strip())

# Create dictionary that matches the keys to its values
fields = dict(zip(keys, values))