Extract/Restore properties file's text part

prop.py

'''
Property Extractor and Restorer
'''

path=input("File path:")
mode=input("Mode([R]estore/[E]xtract):")

with open(path,"r",encoding="utf-8") as f:
    if mode not in "RrEe" or len(mode)!=1:
        print("Err.1: Mode should be one of 'RE'. Quit")
        exit(1)
    if mode in "Ee":
        oup=input("Output file:")
        nextGood=False
        with open(oup,"w",encoding="utf-8") as f2:
            ln=f.readlines()
            for i in ln:
                i=i.strip()
                if "=" in i:
                    f2.write(i[i.find("=")+1:]+"\n")
                elif nextGood:
                    f2.write(i+"\n")
                if len(i)>0 and "\\"==i[-1]:
                    nextGood=True
                else:
                    nextGood=False
    else:
        inp=input("Input file:")
        rec=[]
        with open(inp,"r",encoding="utf-8") as f2:
            tmp=f2.readlines()
            for i in tmp:
                if len(i.strip())>0:
                    rec.append(i.strip())
        oup=input("Output File:")
        cc=0
        with open(oup,"w",encoding="utf-8") as f3:
            ln=f.readlines()
            nextGood=False
            for i in ln:
                i=i.strip()
                if "=" in i:
                    f3.write(i.split("=")[0]+"="+rec[cc]+"\n")
                    cc+=1
                elif nextGood:
                    f3.write(rec[cc]+"\n")
                    cc+=1
                else:
                    f3.write(i+"\n")
                if len(i)>0 and "\\"==i[-1]:
                    nextGood=True
                else:
                    nextGood=False

Revision 2: Updated support for \