Completed first day successful

Day0/doorTwo.py

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+file = open('/Users/mastermito/Dev/AdventOfCode/Day0/input.txt', 'r')
+
+#start of dial            
+number = 50
+#counter for zeros
+counter = 0
+
+lines = file.readlines()
+for line in lines:
+    step = int(line[1:])
+    direction = 1 if line.startswith('R') else -1;
+
+    for singleStep in range(step):
+        number = number + direction
+        number = number % 100
+        if number == 0:
+            counter += 1
+
+print('counter:', counter)
+
+file.close()