Simple-Nested-Macroprocessor-in-Python

This is a code for simple nested macroprocessor written in Python

Algorithm

Open input file in read and create mnt, fppt and mdt
Declare lists
if MACRO in words > count ‘&’ in words > write(words1[0]+count+line no.) in mnt
write(words[1]+words[-count]+x) > name=words[1] > append(words[-count]),words[1],x > count- - > x++
count != 0 > goto 4
line ++
if words[-1] in fp > y= fp.index(words[-1]) > write(mname[y]+words[0]+pp[y])
else > write(name+words[0]+words[-1])
line++ > y=0
if MEND ! in words > goto 7
write(words[0])
x=1 > close all files
open all files in read > create papt
i in range(lines)
if words[0] == words1[0] > x=words1[-2] > y=1
write(words[0]+y+words[-x]) > y++ > x - -
if x!=0 > goto 16
if j != lines1 > goto 15
if i != lines > goto 14
close all files
Open all files in read > create expanded code
if MACRO in words
for (line in f) > if MEND in words : break > else : continue
else > if words[0] in operation : write(line)
else:
j++ > if words1[0]==words[0]
line2=lines2[k]
if words[0]==words2[0] & words1[-1]==words2[-2]: write(words[1]+words2[-1]) ,flag=0, break
else flag=1
k++ > if k!= lines2 : goto 27
if flag==1: write(words1[1]+words1[-1]), flag=0
if j!= lines1 : goto 26
if ! EOF : goto 22
Close all files