Create a Blockchain with python

Blockchain_2/Blockchain/blockchain.py

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+# create a Blockchain. 
+# A blockchain is a chain of blocks that contain data or information.
+
+# To be installed: pip install Flask
+# Download Postman to test the API
+# Importing the libraries
+import datetime # to get the current time
+import hashlib # to hash the blocks
+import json # to encode the blocks before hashing
+from flask import Flask, jsonify # to create the web app
+
+# Part 1 - Building a Blockchain. 
+class Blockchain: 
+    # this init like a constructor
+    # Self is the object that we are going to create
+    def __init__(self) 
+        # create the chain
+        self.chain = []
+        self.create_block(
+            proof = 1, 
+            previous_has='0'
+        )