modified pattern2.py

previously it is showing some error  and not printing proper no of lines

Author: sundaram2021

Patterns/pattern2.py

@@ -13,16 +13,15 @@ def main():
     pattern(lines)
 
 def pattern(lines):
-    t = 0
-    m = lines + 1
-    for i in reversed(range(lines+1)):
-        pattern = "@"*(m)
-        format = " "*t
-        t = t + 1
-        print(format + pattern)
-        m = m -2
-        if m <= 0:
-            exit()
+    for i in range(lines,0,-1):
+        for j in range(lines-i):
+            print(' ', end='') 
+        
+        for j in range(2*i-1):
+            print('$',end='')
+        print() 
+
 
 if __name__ == "__main__":
     main()
+