Python Guides

docs.py

# Virtual Environment Setup
mkdir apis
cd apis
python3 -m venv apis
source apis/bin/activate
pip install requests

# Create a python file called test.py
import json
import requests

api_token = 'your_api_token'
api_url_base = 'https://api.digitalocean.com/v2/

headers = {'Content-Type': 'application/json','Authorization': 'Bearer {0}'.format(api_token)}

def get_account_info():

    api_url = '{0}account'.format(api_url_base)
    response = requests.get(api_url, headers=headers)

    if response.status_code == 200:
        return json.loads(response.content.decode('utf-8'))
    else:
        return None
account_info = get_account_info()

if account_info is not None:
    print("Here's your info: ")
    for k, v in account_info['account'].items():
        print('{0}:{1}'.format(k, v))
else:
    print('[!] Request Failed')
    
# Run python file:
python3 test.py

# POST Req:
import json

url = 'https://api.github.com/some/endpoint'
payload = {'some': 'data'}
r = requests.post(url, data=json.dumps(payload))

# Convert JSON to Python Object (Dict)
# To convert JSON to a Python dict use this:
import json

json_data = '{"name": "Brian", "city": "Seattle"}'
python_obj = json.loads(json_data)
print python_obj["name"]
print python_obj["city"]

# Convert JSON to Python Object (List)
# JSON data can be directly mapped to a Python list.
import json

array = '{"drinks": ["coffee", "tea", "water"]}'
data = json.loads(array)
for element in data['drinks']:
    print element
    
# Convert JSON to Python Object (float)
# Floating points can be mapped using the decimal library.
import json
from decimal import Decimal

jsondata = '{"number": 1.573937639}'
x = json.loads(jsondata, parse_float=Decimal)
print x['number']

# Convert JSON to Python Object (Example)
# JSON data often holds multiple objects, an example of how to use that below:
import json
 
json_input = '{"persons": [{"name": "Brian", "city": "Seattle"}, {"name": "David", "city": "Amsterdam"} ] }'
try:
    decoded = json.loads(json_input)
    # Access data
    for x in decoded['persons']:
        print x['name']
except (ValueError, KeyError, TypeError):
    print "JSON format error"
    
# Writing JSON to a file
import json

person_dict = {"name": "Bob",
"languages": ["English", "Fench"],
"married": True,
"age": 32
}
with open('person.txt', 'w') as json_file:
  json.dump(person_dict, json_file)

# Pretty Print JSON
import json
your_json = '["foo", {"bar":["baz", null, 1.0, 2]}]'
parsed = json.loads(your_json)
print(json.dumps(parsed, indent=4, sort_keys=True))
***** OR *****
import pprint
pprint.pprint(json_data)
***** OR *****
print(json.dumps(person_dict, indent = 4, sort_keys=True))

# Reading from JSON file
import json

# read file
with open('example.json', 'r') as myfile:
    data=myfile.read()

# parse file
obj = json.loads(data)

# show values
print("usd: " + str(obj['usd']))
print("eur: " + str(obj['eur']))
print("gbp: " + str(obj['gbp']))

# Iterate over JSON file
loaded_json = json.loads(json_data)
for x in loaded_json:
	print("%s: %d" % (x, loaded_json[x]))

-----------------------------------------------
# FLASK 
INSTALL: $ pip install Flask

# Create a file called hello.py
from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello():
return "Hello World!"
if __name__ == "__main__":
app.run()

-----------------------------------------------
                 API CALLS
-----------------------------------------------
from flask import json, request, jsonify, Flask
@app.route('/messages', methods = ['POST'])
def api_message():

    if request.headers['Content-Type'] == 'text/plain':
        return "Text Message: " + request.data

    elif request.headers['Content-Type'] == 'application/json':
        return "JSON Message: " + json.dumps(request.json)

    elif request.headers['Content-Type'] == 'application/octet-stream':
        f = open('./binary', 'wb')
        f.write(request.data)
                f.close()
        return "Binary message written!"

    else:
        return "415 Unsupported Media Type ;)"

@app.route('/api/add_message/<uuid>', methods=['GET', 'POST'])
def add_message(uuid):
    content = request.json
    print content['mytext']
    return jsonify({"uuid":uuid})

@app.route('/hello', methods=['POST'])
def hello():
   return jsonify(request.json)

.field-outline{
  background: #fff;
  padding: 10px 20px;
  border-radius: 15px;
  text-decoration: none;
  color: #000;
  position: relative;
  border: 1.5px solid blue;
}

<a class="field-outline">Text1</a>
<i class="fa fa-check" style="color:green;font-size:24px"></i>
<a class="field-outline">Text2</a>
<i class="fa fa-close" style="color:red;font-size:24px"></i>

function getKeyValues(data) {
    var q = [];
    var keys = Object.keys(data);
    for (var i = 0; i < keys.length; i++) {
        var key = keys[i];
        var value = data[key];
        if (value == null) {
            q.push(key + "=''");
        } else if (typeof value == "object") {
            q.push(getKeyValues(value));
        } else {
            q.push(key + "=" + value);
        }
    }
    return q.join(",");
}
function getKeyValues(d) {
    return Object.keys(d).reduce((memo, key) => {
        if (!d[key]) {
            memo[key] = '';
        } else if (typeof d[key] === 'object') {
            Object.keys(d[key]).forEach((subKey) => {
                memo[subKey] = d[key][subKey];
            })
        } else {
            memo[key] = d[key];
        }
        return memo;
    }, {})
}

Procfile: (maybe in backend)
-- web: node app.js 
OR
-- web: npm start
	


-----------------------------------------------
#resources
* 'https://www.w3schools.com/python/python_json.asp'
* 'https://github.com/carpedm20/emoji' pip install emoji
* 'https://github.com/dominiek/python-api-skeleton'
* 'https://github.com/dominiek/python-api-skeleton/blob/master/test/utils.py'
* 'https://github.com/dhruvilp/flask_react_app'
* 'http://blog.luisrei.com/articles/flaskrest.html'

* 'http://www.findtheconversation.com/concept-map/'
* 'https://bl.ocks.org/swayvil/b86f8d4941bdfcbfff8f69619cd2f460'
* 'https://github.com/velovsky/Derived-D3.js-Collapsible-Tree'
* 'https://bl.ocks.org/d3noob/43a860bc0024792f8803bba8ca0d5ecd'
* 'https://blockbuilder.org/tejaser/55c43b4a9febca058363a5e58edbce81'

* 'http://198.177.2.186:8088/CooCooWeb.aspx?sid=NY&train=3953'
* 'http://198.177.2.186:8088/TrainSchedule.asmx'

* 'https://github.com/alexkuz/flask-react-boilerplate'
* ag-grid: 'https://www.ag-grid.com/javascript-grid-features/'