bite 107

Author: boraxpr

107/list_comprehensions.py

@@ -0,0 +1,9 @@
+def filter_positive_even_numbers(numbers):
+    """Receives a list of numbers, and returns a filtered list of only the
+       numbers that are both positive and even (divisible by 2), try to use a
+       list comprehension."""
+    numbers = [i for i in numbers if i!=0 and i%2==0]
+    return numbers
+
+# filter_positive_even_numbers([0,1,2,3,4,5,6,7,8,9])
+# print(filter_positive_even_numbers([0,1,2,3,4,5,6,7,8,9]))

107/test_list_comprehensions.py

@@ -0,0 +1,20 @@
+from list_comprehensions import filter_positive_even_numbers
+
+
+def test_filter_positive_and_negatives():
+    numbers = list(range(-10, 11))
+    assert filter_positive_even_numbers(numbers) == [2, 4, 6, 8, 10]
+
+
+def test_only_positives():
+    numbers = [2, 4, 51, 44, 47, 10]
+    assert filter_positive_even_numbers(numbers) == [2, 4, 44, 10]
+
+
+def test_filter_zero_and_negatives():
+    numbers = [0, -1, -3, -5]
+    assert filter_positive_even_numbers(numbers) == []
+
+    test_filter_positive_and_negatives()
+    test_filter_zero_and_negatives()
+    test_only_positives()