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Solved issue #53

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mattveraldi
2018-10-23 12:46:20 +02:00
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snippets/keys_only.md
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@ -2,14 +2,11 @@
Function which accepts a dictionary of key value pairs and returns a new flat list of only the keys. 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 (a flat dictionary) and not nested data-structures which are also commonly used with dictionaries. (a flat dictionary resembles a json and a flat list an array for javascript people). Uses the .keys() method of "dict" objects. dict.keys() returns a view object that displays a list of all the keys. Then, list(dict.keys()) returns a list that stores all the keys of a dict.
``` python ``` python
def keys_only(flat_dict): def keys_only(flat_dict):
lst = [] return list(flat_dict.keys())
for k, v in flat_dict.items():
lst.append(k)
return lst
``` ```
``` python ``` python