Python Regex - Parse string and extract key=value pairs

You have a few ways to do this. First, since you said your key-value pairs are embedded in a larger email, you need to extract them. You can do that with this regex, which checks for a line starting with a word and an equals sign:

import re

text = " ... Full email text ... "
dataPoints = re.search(r"^\w*=.*$", text, re.MULTILINE).group(0)

Then you need to create your dictionary.

Option 1: Simplest

Use the following regex find:

result = dict(re.findall(r'(\w*)=(\".*?\"|\S*)', dataPoints))

Regex demo

Option 2: Typical split

Follow the typical method for this problem: split the various key-value combinations into a list, and then split each combination into separate keys and values. However, since your key-value pairs are separated by spaces rather than semicolons, ampersands, or something similar, and some of your values have spaces in them, we can't simply split by spaces. That means we need to use a regex lookahead for this to work properly:

regexSplit = dict([i.split("=") for i in re.split(r"\s(?=\w+=)", dataPoints)])

Option 3: No regex

If you want to avoid using regex altogether for whatever reason, you can use the following, which splits on equals signs and then recombines the keys and values into the proper arrangement for creating a dictionary:

allSplits = dataPoints.split("=")
splitList = [allSplits[0]] + [i for a in allSplits[1:-1] 
    for i in a.rsplit(" ", 1)] + [allSplits[-1]]

splitDict = dict(zip(splitList[::2], splitList[1::2]))

The code above assumes your dictionary will end up with at least 2 items.

Demo for all 3 options