Added alternate macro code in python version folder.

Codes/Python version/Assignment-A2 (Macro)/Code-A2.py

@@ -0,0 +1,86 @@
+# Assignment-A2 (Pass 1 and pass 2 macro processor)
+try:
+    source= open('source.txt', 'r')
+    dum = source.readline()
+    print("File is read successfully.")
+    source.seek(0)
+except FileNotFoundError:
+    print('\n\n\nsource.txt file not found.\nOpen Macroprocessor Folder in VSC[not the main folder]\n\n\n')
+except IOError:
+    print('The source file has an IO error')
+
+
+MDT =[]
+MNT =[]
+
+def macroman(line):
+    name = line.split()[1] #A concise way to get the 2nd word-> name of macro. index =1. first split and then get 2nd word
+    entry = []
+    entry.append(line.strip()) #append the macro definition line
+    while True:
+        line=source.readline().upper()
+        if not line:
+            print('No MEND found for: ', name)
+            return
+        if 'MACRO' in line:
+            macroman(line)
+        elif 'MEND' in line:
+            global MDT, MNT
+            entry.append(line.strip()) #MEND line appended too
+            MNT.append([len(MNT)+1, name, len(MDT)+1]) # Eg. 1 Fibo 50
+            MDT = MDT + entry
+            return
+        else:
+            entry.append(line.strip())
+
+
+def pass1():
+    global MDT, MNT
+    while True:
+        line = source.readline().upper()
+        if not line:break
+        if 'MACRO' in line:
+            macroman(line)
+    print('\nMNT:')
+    for a in MNT:
+        print(a)
+    print('\n\nMDT:')
+    i=0
+    for a in MDT:
+        i=i+1
+        print (i, ' ',a)
+
+pass1()
+#pass 2 starts here:
+def inserter(sline, name):
+    global MDT, MNT
+    sline = ''
+    for a in MNT:
+        if a[1] == name:
+            add = a[2]
+            break
+    while True:
+        if 'MEND' in MDT[add]:
+            break
+        sline += MDT[add] + '\n'
+        add+=1
+    return sline
+
+def pass2():
+    source.seek(0)
+    output = open('output.txt', 'w')
+    output.close()
+    output = open('output.txt', 'a+')
+    while True:
+        sline= source.readline().upper()
+        if not sline:break
+        for a in MNT:
+            if a[1] in sline and 'MACRO' not in sline:
+                sline=inserter(sline, a[1])
+        d = sline.strip()
+        if d not in MDT:
+            output.write(sline)
+    print('done.')
+
+
+pass2()

Codes/Python version/Assignment-A2 (Macro)/source.txt

@@ -0,0 +1,21 @@
+macro add num1, num2
+a1
+maCro sub num1, num2
+s1
+s2
+s3
+mend
+a2
+mend
+The code above should not come in output coz it's just definitions.
+The actual code begins from here.
+sure, you can write any shit in the file.
+start 1000
+mover areg, 50
+movem breg, 100
+I am now calling first function. The following line should be replaced by the body:
+add areg, 30
+dbms_output.print_line('Present Ma'am!')
+equ areg, 40
+add 5,6
+sub 3,4

Codes/Python version/README.md

@@ -9,7 +9,7 @@
 ---
 
 - [Assignment-A1 (Pass 1 and pass 2 assembler)](https://git.kska.io/sppu-te-comp-content/SystemsProgrammingAndOperatingSystem/src/branch/main/Codes/Python%20version/Assignment-A1%20%28Assembler%29)
-- [Assignment-A2 (Pass 1 and pass 2 macro)](https://git.kska.io/sppu-te-comp-content/SystemsProgrammingAndOperatingSystem/src/branch/main/Codes/Group%20A/Code-A2.py) - This code is from "Codes/Group A" folder
+- [Assignment-A2 (Pass 1 and pass 2 macro)](https://git.kska.io/sppu-te-comp-content/SystemsProgrammingAndOperatingSystem/src/branch/main/Codes/Python%20version/Assignment-A2%20%28Macro%29) // Alternate version available in [Codes/Group A](https://git.kska.io/sppu-te-comp-content/SystemsProgrammingAndOperatingSystem/src/branch/main/Codes/Group%20A/Code-A2.py) folder.
 - [Assignment-A3 (DLL)](https://git.kska.io/sppu-te-comp-content/SystemsProgrammingAndOperatingSystem/src/branch/main/Codes/Group%20A/Assignment-A3) - This code is from "Codes/Group A" folder
 - [Assignment-A4 (Mutex and Semaphore)](https://git.kska.io/sppu-te-comp-content/SystemsProgrammingAndOperatingSystem/src/branch/main/Codes/Group%20B/Code-B4.cpp) - This code is from "Codes/Group B" folder
 - [Assignment-A5 (CPU scheduling)](https://git.kska.io/sppu-te-comp-content/SystemsProgrammingAndOperatingSystem/src/branch/main/Codes/Python%20version/Assignment-A5%20%28CPU%20Scheduling%29)