Automatic Input repeat and appending memebers.csv updated code

scraper.py

@@ -64,40 +64,52 @@ def banner():
             groups.append(chat)
     except:
         continue
+
+# To get input from user continuously we use this while loop 
+while(1):
+    print(gr+'[+] Choose a group to scrape members :'+re)
+    i=0
+    for g in groups:
+        print(gr+'['+cy+str(i)+']' + ' - ' + g.title)
+        i+=1
+
+    # 'C' key to exit from I/O operation
+    print(gr+'[+] Press key C to exit')
+    print('')
+    g_index = input(gr+"[+] Enter a Number : "+re)
+    if(g_index=='C' or g_index=='c'):
+        break
+    target_group=groups[int(g_index)]
 
-print(gr+'[+] Choose a group to scrape members :'+re)
-i=0
-for g in groups:
-    print(gr+'['+cy+str(i)+']' + ' - ' + g.title)
-    i+=1
-
-print('')
-g_index = input(gr+"[+] Enter a Number : "+re)
-target_group=groups[int(g_index)]
-
-print(gr+'[+] Fetching Members...')
-time.sleep(1)
-all_participants = []
-all_participants = client.get_participants(target_group, aggressive=True)
+    print(gr+'[+] Fetching Members...')
+    time.sleep(1)
+    all_participants = []
+    all_participants = client.get_participants(target_group, aggressive=True)
 
-print(gr+'[+] Saving In file...')
-time.sleep(1)
-with open("members.csv","w",encoding='UTF-8') as f:
-    writer = csv.writer(f,delimiter=",",lineterminator="\n")
-    writer.writerow(['username','user id', 'access hash','name','group', 'group id'])
-    for user in all_participants:
-        if user.username:
-            username= user.username
-        else:
-            username= ""
-        if user.first_name:
-            first_name= user.first_name
-        else:
-            first_name= ""
-        if user.last_name:
-            last_name= user.last_name
-        else:
-            last_name= ""
-        name= (first_name + ' ' + last_name).strip()
-        writer.writerow([username,user.id,user.access_hash,name,target_group.title, target_group.id])      
-print(gr+'[+] Members scraped successfully. Subscribe Termux Professor Youtube Channel For Add Members')
+    print(gr+'[+] Saving In file...')
+    time.sleep(1)
+
+    if('members.csv' not in os.listdir()):
+        f=open('members.csv','w')
+
+    #Appends data into a single csv file 
+    if('members.csv' in os.listdir()):
+        with open("members.csv","a",encoding='UTF-8') as f:
+            writer = csv.writer(f,delimiter=",",lineterminator="\n")
+            writer.writerow(['username','user id', 'access hash','name','group', 'group id'])
+            for user in all_participants:
+                if user.username:
+                    username= user.username
+                else:
+                    username= ""
+                if user.first_name:
+                    first_name= user.first_name
+                else:
+                    first_name= ""
+                if user.last_name:
+                    last_name= user.last_name
+                else:
+                    last_name= ""
+                name= (first_name + ' ' + last_name).strip()
+                writer.writerow([username,user.id,user.access_hash,name,target_group.title, target_group.id])      
+        print(gr+'[+] Members scraped successfully. Subscribe Termux Professor Youtube Channel For Add Members')