Start lab

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diff --git a/csci1913/lab1/lab1_strap012.py b/csci1913/lab1/lab1_strap012.py
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+++ b/csci1913/lab1/lab1_strap012.py
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+def left(exp):
+	return exp[0]
+def op(exp):
+	return exp[1]
+def right(exp):
+	return exp[2]
+def isInside(var, e):
+	if left(e)==var or right(e)==var:
+		return True
+	else:
+		return False
+
+
+
+
+
+#
+#  TESTS. Test the equation solver for CSci 1913 Lab 1.
+#
+#    James Moen
+#    10 Sep 18
+#
+#  Every test is followed by a comment which shows what must be printed if your
+#  code works correctly. It also shows how many points the test is worth, for a
+#  total of 35 possible points.
+#
+
+print(isInside('x', 'x'))                          #  True   1 point
+print(isInside('x', 'y'))                          #  False  1 point
+print(isInside('x', ('x', '+', 'y')))              #  True   2 points
+print(isInside('x', ('a', '+', 'b')))              #  False  2 points
+print(isInside('+', ('a', '+', 'b')))              #  False  2 points
+print(isInside('x', (('m', '*', 'x'), '+', 'b')))  #  True   2 points
+
+print(solve('x', (('a', '+', 'x'), '=', 'c')))
+#  ('x', '=', ('c', '-', 'a'))  2 points
+
+print(solve('x', (('x', '+', 'b'), '=', 'c')))
+#  ('x', '=', ('c', '-', 'b'))  2 points
+
+print(solve('x', (('a', '-', 'x'), '=', 'c')))
+#  ('x', '=', ('a', '-', 'c'))  2 points
+
+print(solve('x', (('x', '-', 'b'), '=', 'c')))
+#  ('x', '=', ('c', '+', 'b'))  2 points
+
+print(solve('x', (('a', '*', 'x'), '=', 'c')))
+#  ('x', '=', ('c', '/', 'a'))  2 points
+
+print(solve('x', (('x', '*', 'b'), '=', 'c')))
+#  ('x', '=', ('c', '/', 'b'))  2 points
+
+print(solve('x', (('a', '/', 'x'), '=', 'c')))
+#  ('x', '=', ('a', '/', 'c'))  2 points
+
+print(solve('x', (('x', '/', 'b'), '=', 'c')))
+#  ('x', '=', ('c', '*', 'b'))  2 points
+
+print(solve('y', ('y', '=', (('m', '*', 'x'), '+', 'b'))))
+# ('y', '=', (('m', '*', 'x'), '+', 'b'))  2 points
+
+print(solve('x', ('y', '=', (('m', '*', 'x'), '+', 'b'))))
+# ('x', '=', (('y', '-', 'b'), '/', 'm'))  2 points
+
+print(solve('a', (('b', '+', 'c'), '=', ('d', '*', (('a', '/', 'e'), '-', 'f')))))
+# ('a', '=', (((('b', '+', 'c'), '/', 'd'), '+', 'f'), '*', 'e'))  5 points
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