adding left and right view to DataFrame, equivalent to head() and tail()

Author: K.-Michael Aye

pandas/core/generic.py

@@ -1781,7 +1781,7 @@ def head(self, n=5):
         Returns first n rows
         """
         l = len(self)
-        if l == 0 or n==0:
+        if l == 0 or n == 0:
             return self
         return self.iloc[:n]
 
@@ -1794,6 +1794,24 @@ def tail(self, n=5):
             return self
         return self.iloc[-n:]
 
+    def left(self, n=5):
+        """
+        Return first n columns
+        """
+        l = self.shape[1]
+        if l == 0 or n == 0:
+            return self
+        return self.iloc[:, :n]
+
+    def right(self, n=5):
+        """
+        Return last n columns
+        """
+        l = self.shape[1]
+        if l == 0 or n == 0:
+            return self
+        return self.iloc[:, -n:]
+
     #----------------------------------------------------------------------
     # Attribute access