import re
txt = "Th.rain.d.DF and.thou.will an" expr = "\w+.\w+.\w+(.\w*)*"
def modified(str): print(str.group()) x = re.split(r".", str.group()) newstr = "json_value(" + x[0] + "." + x[1] + ", '$" for i in range(2, len(x)): newstr = newstr + "." + x[i] newstr = newstr + "')" return newstr
x = re.sub(expr, modified(re.search(expr, txt)), txt, 1) print(x) while re.search(expr, x): x = re.sub(expr, modified(re.search(expr, x)), x, 1)
print(x)