btharp
diff --git a/‎Chapter3.py‎
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diff --git a/‎Pythonds/Chapter5.py‎
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+#%%
+def listsum(numlist):
+    theSum=0
+    for i in range(len(numlist)):
+        theSum+=numlist[i]
+    
+    return theSum
+# %%
+print(listsum([1,3,5,7,9]))
+
+
+# %%  Sum with recursion
+def listsum2(numlist):
+    if len(numlist)==1:
+        return numlist[0]
+    else:
+        return numlist[0]+listsum(numlist[1:])
+
+# %%
+print(listsum2([1,3,5,7,9]))
+# %%