From 3bb27e586a3d51d5954f263e36e6ae298479b4f4 Mon Sep 17 00:00:00 2001
From: Marius-Constantin Melemciuc <marius92mc@gmail.com>
Date: Mon, 2 Oct 2017 12:48:10 +0300
Subject: [PATCH] Add pipenv instead of plain requirements.txt

---
 Pipfile          |  15 +++++++
 Pipfile.lock     | 109 +++++++++++++++++++++++++++++++++++++++++++++++
 README.md        |  30 ++++++++++---
 requirements.txt |   2 -
 4 files changed, 148 insertions(+), 8 deletions(-)
 create mode 100644 Pipfile
 create mode 100644 Pipfile.lock
 delete mode 100644 requirements.txt

diff --git a/Pipfile b/Pipfile
new file mode 100644
index 0000000..31c3e0c
--- /dev/null
+++ b/Pipfile
@@ -0,0 +1,15 @@
+[[source]]
+url = "https://pypi.python.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[dev-packages]
+
+[requires]
+python_version = "3.6"
+
+[packages]
+
+flask = "==0.12.2"
+requests = "==2.18.4"
+
diff --git a/Pipfile.lock b/Pipfile.lock
new file mode 100644
index 0000000..4d21bf7
--- /dev/null
+++ b/Pipfile.lock
@@ -0,0 +1,109 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "45af71184b5b013f58a8601f7f87c9f0b882afe19f197ce45d6d08e46d615159"
+        },
+        "host-environment-markers": {
+            "implementation_name": "cpython",
+            "implementation_version": "3.6.2",
+            "os_name": "posix",
+            "platform_machine": "x86_64",
+            "platform_python_implementation": "CPython",
+            "platform_release": "4.10.0-35-generic",
+            "platform_system": "Linux",
+            "platform_version": "#39~16.04.1-Ubuntu SMP Wed Sep 13 09:02:42 UTC 2017",
+            "python_full_version": "3.6.2",
+            "python_version": "3.6",
+            "sys_platform": "linux"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.6"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.python.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "certifi": {
+            "hashes": [
+                "sha256:54a07c09c586b0e4c619f02a5e94e36619da8e2b053e20f594348c0611803704",
+                "sha256:40523d2efb60523e113b44602298f0960e900388cf3bb6043f645cf57ea9e3f5"
+            ],
+            "version": "==2017.7.27.1"
+        },
+        "chardet": {
+            "hashes": [
+                "sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691",
+                "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae"
+            ],
+            "version": "==3.0.4"
+        },
+        "click": {
+            "hashes": [
+                "sha256:29f99fc6125fbc931b758dc053b3114e55c77a6e4c6c3a2674a2dc986016381d",
+                "sha256:f15516df478d5a56180fbf80e68f206010e6d160fc39fa508b65e035fd75130b"
+            ],
+            "version": "==6.7"
+        },
+        "flask": {
+            "hashes": [
+                "sha256:0749df235e3ff61ac108f69ac178c9770caeaccad2509cb762ce1f65570a8856",
+                "sha256:49f44461237b69ecd901cc7ce66feea0319b9158743dd27a2899962ab214dac1"
+            ],
+            "version": "==0.12.2"
+        },
+        "idna": {
+            "hashes": [
+                "sha256:8c7309c718f94b3a625cb648ace320157ad16ff131ae0af362c9f21b80ef6ec4",
+                "sha256:2c6a5de3089009e3da7c5dde64a141dbc8551d5b7f6cf4ed7c2568d0cc520a8f"
+            ],
+            "version": "==2.6"
+        },
+        "itsdangerous": {
+            "hashes": [
+                "sha256:cbb3fcf8d3e33df861709ecaf89d9e6629cff0a217bc2848f1b41cd30d360519"
+            ],
+            "version": "==0.24"
+        },
+        "jinja2": {
+            "hashes": [
+                "sha256:2231bace0dfd8d2bf1e5d7e41239c06c9e0ded46e70cc1094a0aa64b0afeb054",
+                "sha256:ddaa01a212cd6d641401cb01b605f4a4d9f37bfc93043d7f760ec70fb99ff9ff"
+            ],
+            "version": "==2.9.6"
+        },
+        "markupsafe": {
+            "hashes": [
+                "sha256:a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665"
+            ],
+            "version": "==1.0"
+        },
+        "requests": {
+            "hashes": [
+                "sha256:6a1b267aa90cac58ac3a765d067950e7dbbf75b1da07e895d1f594193a40a38b",
+                "sha256:9c443e7324ba5b85070c4a818ade28bfabedf16ea10206da1132edaa6dda237e"
+            ],
+            "version": "==2.18.4"
+        },
+        "urllib3": {
+            "hashes": [
+                "sha256:06330f386d6e4b195fbfc736b297f58c5a892e4440e54d294d7004e3a9bbea1b",
+                "sha256:cc44da8e1145637334317feebd728bd869a35285b93cbb4cca2577da7e62db4f"
+            ],
+            "version": "==1.22"
+        },
+        "werkzeug": {
+            "hashes": [
+                "sha256:e8549c143af3ce6559699a01e26fa4174f4c591dbee0a499f3cd4c3781cdec3d",
+                "sha256:903a7b87b74635244548b30d30db4c8947fe64c5198f58899ddcd3a13c23bb26"
+            ],
+            "version": "==0.12.2"
+        }
+    },
+    "develop": {}
+}
diff --git a/README.md b/README.md
index 3e582e2..fe5999a 100644
--- a/README.md
+++ b/README.md
@@ -4,13 +4,31 @@ This is the source code for my post on [Building a Blockchain](https://medium.co
 
 ## Installation
 
-1. Make sure [Python 3.6+](https://www.python.org/downloads/) is installed
-1. Install requirements: `$ pip install -r requirements.txt`
-1. Run the server:
-    * `$ python blockchain.py` 
-    * `$ python blockchain.py -p 5001`
-    * `$ python blockchain.py --port 5002`
+1. Make sure [Python 3.6+](https://www.python.org/downloads/) is installed. 
+2. Install [pipenv](https://github.com/kennethreitz/pipenv). 
+
+```
+$ pip install pipenv 
+```
+
+3. Create a _virtual environment_ and specify the Python version to use. 
+
+```
+$ pipenv --python=python3.6
+```
+
+4. Install requirements.  
+
+```
+$ pipenv install 
+``` 
+
+5. Run the server:
+    * `$ pipenv run python blockchain.py` 
+    * `$ pipenv run python blockchain.py -p 5001`
+    * `$ pipenv run python blockchain.py --port 5002`
 
 ## Contributing
 
 Contributions are welcome! Please feel free to submit a Pull Request.
+
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 6227a71..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-Flask==0.12.2
-requests==2.18.4