Add Python 3 + psycopg2 + Jupyter Notebook example

languages/python/jupyter_notebook/README.md

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+# EQL example for Python 3 and Jupyter Notebook
+
+## Prerequisites
+
+* Python 3
+* psycopg2
+* Jupyter Notebook
+* Docker
+* Docker compose
+* CipherStash account
+* CipherStash CLI
+
+## Running / Development
+
+In this directory, run:
+
+```shell
+jupyter notebook
+```
+
+and open `CipherStash-Getting-Started.ipynb`. Follow the instructions within.
+

languages/python/jupyter_notebook/application_types.sql

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+--
+-- Application-specific types
+--
+
+CREATE DOMAIN examples__encrypted_big_int AS cs_encrypted_v1
+CHECK(
+    VALUE#>>'{i,t}' = 'examples' AND
+    VALUE#>>'{i,c}' = 'encrypted_big_int'
+);
+
+CREATE DOMAIN examples__encrypted_boolean AS cs_encrypted_v1
+CHECK(
+    VALUE#>>'{i,t}' = 'examples' AND
+    VALUE#>>'{i,c}' = 'encrypted_boolean'
+);
+
+CREATE DOMAIN examples__encrypted_date AS cs_encrypted_v1
+CHECK(
+    VALUE#>>'{i,t}' = 'examples' AND
+    VALUE#>>'{i,c}' = 'encrypted_date'
+);
+
+CREATE DOMAIN examples__encrypted_float AS cs_encrypted_v1
+CHECK(
+    VALUE#>>'{i,t}' = 'examples' AND
+    VALUE#>>'{i,c}' = 'encrypted_float'
+);
+
+CREATE DOMAIN examples__encrypted_int AS cs_encrypted_v1
+CHECK(
+    VALUE#>>'{i,t}' = 'examples' AND
+    VALUE#>>'{i,c}' = 'encrypted_int'
+);
+
+CREATE DOMAIN examples__encrypted_small_int AS cs_encrypted_v1
+CHECK(
+    VALUE#>>'{i,t}' = 'examples' AND
+    VALUE#>>'{i,c}' = 'encrypted_small_int'
+);
+
+CREATE DOMAIN examples__encrypted_utf8_str AS cs_encrypted_v1
+CHECK(
+    VALUE#>>'{i,t}' = 'examples' AND
+    VALUE#>>'{i,c}' = 'encrypted_utf8_str'
+);
+
+CREATE DOMAIN examples__encrypted_jsonb AS cs_encrypted_v1
+CHECK(
+    VALUE#>>'{i,t}' = 'examples' AND
+    VALUE#>>'{i,c}' = 'encrypted_jsonb'
+);