add snippets keys_only + values_only + test bp

snippets/keys_only.md

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+### keys_only
+
+Function which accepts a dictionary of key value pairs and returns a new flat list of only the keys.
+
+Uses the .items() function with a for loop on the dictionary to track both the key and value and returns a new list by appending the keys to it. Best used on 1 level-deep key:value pair dictionaries and not nested data-structures.
+
+``` python
+def keys_only(dict):
+    lst = []
+    for k, v in dict.items():
+        lst.append(k)
+    return lst
+```
+
+``` python
+ages = {
+     "Peter": 10,
+     "Isabel": 11,
+     "Anna": 9,
+}
+keys_only(ages) # result
+['Peter', 'Isabel', 'Anna']
+```

snippets/values_only.md

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+### values_only
+
+Function which accepts a dictionary of key value pairs and returns a new flat list of only the values.
+
+Uses the .items() function with a for loop on the dictionary to track both the key and value of the iteration and returns a new list by appending the values to it. Best used on 1 level-deep key:value pair dictionaries and not nested data-structures.
+
+``` python
+def values_only(dict):
+    lst = []
+    for k, v in dict.items():
+        lst.append(v)
+    return lst
+```
+
+``` python
+ages = {
+     "Peter": 10,
+     "Isabel": 11,
+     "Anna": 9,
+}
+values_only(ages) # result
+[10, 11, 9]
+```

test/keys_only/Keys_only.test.py

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+import types,functools
+from pytape import test
+from keys_only import keys_only
+def keys_only_test(t):
+    t.true(isinstance(keys_only, (types.BuiltinFunctionType, types.FunctionType, functools.partial)),'keys_only is a function')
+test('Testing keys_only',keys_only_test)

test/values_only/values_only.py

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+def values_only(dict):
+    lst = []
+    for k, v in dict.items():
+        lst.append(v)
+    return lst

test/values_only/values_only.test.py

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+import types,functools
+from pytape import test
+from values_only import values_only
+def values_only_test(t):
+    t.true(isinstance(values_only, (types.BuiltinFunctionType, types.FunctionType, functools.partial)),'values_only is a function')
+test('Testing values_only',values_only_test)