I have the following string
s = "ΔG'° = (-19.9 +/- 0.4) kilojoule / mole"
I'd like to generate a dictionary like the following
d = {"mean"= -19.9, "sd": 0.4, "units": "kilojoule / mole"}
If the string is -19.9 +/- 0.4 I could do s.split("+/-"). But in the given format, I have
to split several times based on each delimiter.
Is there an easy way of doing this?
You can use
r'=[^\d-]*(?P<mean>-?\d*\.?\d+)\s*\+/-\s*(?P<sd>\d*\.?\d+)\W+(?P<units>.+)'
See the regex demo. Details:
= - a = sign[^\d-]* - zero or more chars other than digit and -(?P<mean>-?\d*\.?\d+) - Group "mean": an optional -, zero or more digits, an optional . and then one or more digits\s*\+/-\s* - a +/- substring enclosed with zero or more whitespaces(?P<sd>\d*\.?\d+) - Group "sd": zero or more digits, an optional . and then one or more digits\W+ - one or more non-word chars(?P<units>.+) - Group "units": the rest of the string.See the Python demo:
import re
rx = r'=[^\d-]*(?P<mean>-?\d*\.?\d+)\s*\+/-\s*(?P<sd>\d*\.?\d+)\W+(?P<units>.+)'
text = r"ΔG'° = (-19.9 +/- 0.4) kilojoule / mole"
m = re.search(rx, text)
if m:
print(m.groupdict())
# => {'mean': '-19.9', 'sd': '0.4', 'units': 'kilojoule / mole'}