split apart json.loads and json.load functions in lesson. Co-author @lasse-cs

Author: douglowe

episodes/02-dictionaries.md

@@ -345,20 +345,26 @@ True
 ## JSON files
 
 Because JSON files are such a widely used format, python has a built in package for working with JSON, called `json`:
+This package provides the method `json.load()` to read JSON data from a file and and convert it to a python dictionary:
 
 ```python
 import json
-import glob
 
-filenames = sorted(glob.glob('*.json'))
+with open('ro-crate-metadata-1.json') as f:
+    data = json.load(f)
+```
+
+The closely related method `json.loads()` (s for "string") reads a string containing JSON and turns it into a Python dictionary:
 
-j_objects = {}
-for filename in filenames:
-    with open(filename) as f:
-        j_objects[filename] = json.loads(f.read())
+```python
+json_string = '{"numbers": [1, 2, 3]}'
+d = json.loads(json_string)
+d['numbers']
 ```
 
-The `f.read` method reads the file as a single string, which the `json.loads()` method then turns into a dictionary, following the JSON standard.
+```output
+[1, 2, 3]
+```
 
 ## HTTP requests