import json f = open("show/Dimmer/patch.sav") lines = f.readlines() for i in range(512): line = lines[0] line=line.strip() x=line.split("\t") #print(x) j = x[-1] #print() #print(j) j = json.loads(j) j["DMX"] = i+1 j["NAME"] = "D"+str(i+1) print("{}\t{}\t{}".format(i+1,i+1,json.dumps(j)))