the-vampiire#8 solution

beginner/sum-earnings_dsargento.py

@@ -0,0 +1,20 @@
+def sum_earnings(input):
+    earnings_list = input.split(',')
+    earnings = 0
+    spendings = 0
+    for val in earnings_list:
+        try:
+            val = int(val)
+        except ValueError:
+            return 0
+        if val >= 0:
+            earnings += val
+        else:
+            spendings += val
+        if earnings < (spendings * -1):
+            spendings = 0
+            earnings = 0
+    val_sum = spendings + earnings
+    if val_sum < 0:
+        return 0
+    return val_sum