Create README.md

Signed-off-by: David Rotermund <54365609+davrot@users.noreply.github.com>

python_basics/json/README.md

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+# JSON and dict
+{:.no_toc}
+
+<nav markdown="1" class="toc-class">
+* TOC
+{:toc}
+</nav>
+
+## The goal
+
+
+
+Questions to [David Rotermund](mailto:davrot@uni-bremen.de)
+
+## [json -- JSON encoder and decoder](https://docs.python.org/3/library/json.html)
+
+### [dump](https://docs.python.org/3/library/json.html#json.dump)
+
+```python
+import json
+
+a = dict(one=1, two=2, three=3)
+
+with open("data_out.json", "w") as file:
+    json.dump(a, file)
+```
+
+Content of data_out.json: 
+
+```json
+{"one": 1, "two": 2, "three": 3}
+```
+
+### [load](https://docs.python.org/3/library/json.html#json.load)
+
+
+```python
+import json
+
+with open("data_out.json", "r") as file:
+    b = json.load(file)
+
+print(b)
+```
+
+Output:
+
+```python
+{'one': 1, 'two': 2, 'three': 3}
+```
+
+## [jsmin](https://github.com/tikitu/jsmin/) and [loads](https://docs.python.org/3/library/json.html#json.loads)
+
+```shell
+pip install jsmin
+```
+
+Maybe you want to have comments in your config file. 
+
+Content of data_in.json: 
+```json
+// This an important comment...
+{
+    "one": 1,
+    "two": 2,
+    "three": 3
+}
+```
+
+Note: You need to change the filetype from **JSON** to **JSON with comments**. Lower right corner. 
+
+ The normal JSON functions fails:
+
+```python
+import json
+
+with open("data_in.json", "r") as file:
+    b = json.load(file)
+
+print(b)
+```
+Output: 
+
+```python
+JSONDecodeError: Expecting value: line 1 column 1 (char 0)
+```
+
+With jsmin: 
+
+```python
+import json
+from jsmin import jsmin
+
+with open("data_in.json", "r") as file:
+    minified = jsmin(file.read())
+    
+b = json.loads(minified)
+
+print(b)
+```
+
+Output: 
+
+```python
+{'one': 1, 'two': 2, 'three': 3}
+```