first commit

app.py

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+#app.py
+
+from flask import Flask, request #import main Flask class and request object
+
+app = Flask(__name__) #create the Flask app
+
+@app.route('/query-example')
+def query_example():
+    language = request.args.get('language') #if key doesn't exist, returns None
+    framework = request.args['framework'] #if key doesn't exist, returns a 400, bad request error
+    website = request.args.get('website')
+
+    return '''<h1>The language value is: {}</h1>
+              <h1>The framework value is: {}</h1>
+              <h1>The website value is: {}'''.format(language, framework, website)
+
+@app.route('/form-example', methods=['GET', 'POST']) #allow both GET and POST requests
+def form_example():
+    if request.method == 'POST': #this block is only entered when the form is submitted
+        language = request.form.get('language')
+        framework = request.form['framework']
+
+        return '''<h1>The language value is: {}</h1>
+                  <h1>The framework value is: {}</h1>'''.format(language, framework)
+
+    return '''<form method="POST">
+                  Language: <input type="text" name="language"><br>
+                  Framework: <input type="text" name="framework"><br>
+                  <input type="submit" value="Submit"><br>
+              </form>'''
+
+@app.route('/json-example', methods=['POST']) #GET requests will be blocked
+def json_example():
+    req_data = request.get_json()
+
+    language = req_data['language']
+    framework = req_data['framework']
+    python_version = req_data['version_info']['python'] #two keys are needed because of the nested object
+    example = req_data['examples'][0] #an index is needed because of the array
+    boolean_test = req_data['boolean_test']
+
+    return '''
+           The language value is: {}
+           The framework value is: {}
+           The Python version is: {}
+           The item at index 0 in the example list is: {}
+           The boolean value is: {}'''.format(language, framework, python_version, example, boolean_test)
+
+if __name__ == '__main__':
+    app.run(debug=True, port=5000) #run app in debug mode on port 5000