whether the string is Symmetrical or Palindrome

Python program to check whether the string is Symmetrical or Palindrome

check whether the string is Symmetrical or Palindrome

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+def palindrome(a): 
+
+    mid = (len(a)-1)//2
+    start = 0
+    last = len(a)-1
+    flag = 0
+
+    while(start<mid): 
+
+        if (a[start]== a[last]): 
+
+            start += 1
+            last -= 1
+
+        else: 
+            flag = 1
+            break; 
+
+    if flag == 0: 
+        print("The entered string is palindrome") 
+    else: 
+        print("The entered string is not palindrome") 
+
+def symmetry(a): 
+
+    n = len(a) 
+    flag = 0
+
+    if n%2: 
+        mid = n//2 +1
+    else: 
+        mid = n//2
+
+    start1 = 0
+    start2 = mid 
+
+    while(start1 < mid and start2 < n): 
+
+        if (a[start1]== a[start2]): 
+            start1 = start1 + 1
+            start2 = start2 + 1
+        else: 
+            flag = 1
+            break
+
+    if flag == 0: 
+        print("The entered string is symmetrical") 
+    else: 
+        print("The entered string is not symmetrical") 
+
+string = 'amaama'
+palindrome(string) 
+symmetry(string)