Examples Flask vs Fast API

Recently FastAPI I could see more posts/recommendations compared to flask API in a performance context. A basic example of implementation with flask vs Fast API. The format  /syntax, request differences you can spot by comparing them.

	import flask
	from flask import Flask, request
	app = flask.Flask(__name__)
	app.config["DEBUG"] = True
	#http://localhost:4321/api1?searchparam=param1
	@app.route('/api1',methods=['GET'])
	def api1():
	paramname = request.args.get("searchparam")
	return str(paramname)
	#http://localhost:4321/api2?searchparam1=ABC&searchparam2=100
	@app.route('/api2',methods=['GET'])
	def api2():
	paramname1 = request.args.get("searchparam1")
	paramname2 = request.args.get("searchparam2")
	return str(paramname1 + paramname2)
	if __name__ == "__main__":
	app.run(host='localhost',port=4321,threaded=True)

view raw flaskexample.py hosted with ❤ by GitHub

	#Step 1 - Packages to Install
	#pip install fastapi
	#pip install uvicorn
	#Option - Run from Terminal
	#uvicorn Example1:app --reload
	#Run from Spyder / Example Code
	from fastapi import FastAPI
	import uvicorn
	from fastapi import Form, Request
	app = FastAPI(debug=True)
	#http://localhost:8002/api1/raj
	@app.get('/api1/{searchparam1}')
	def api1(searchparam1: str):
	paramname = searchparam1
	print(paramname)
	return str(paramname)
	#http://localhost:8002/api2/?searchparam1=ABC&searchparam2=100
	@app.get('/api2/')
	def api2(searchparam1: str,searchparam2: int):
	param1 = searchparam1
	param2 = str(searchparam2)
	print(str(param1 +','+ param2))
	return str(param1 +','+ param2)
	if __name__ == "__main__":
	uvicorn.run(app,host="localhost",port=8002)

view raw fastapiexamples.py hosted with ❤ by GitHub

	import flask
	import base64
	from flask import Flask, request
	from PIL import Image
	import io
	app = flask.Flask(__name__)
	app.config["DEBUG"] = True
	#http://localhost:4321/api1?searchparam=param1
	@app.route('/api1',methods=['GET'])
	def Api1():
	paramname = request.args.get("searchparam")
	return str(paramname)
	#http://localhost:4321/api2?searchparam1=ABC&searchparam2=100
	@app.route('/api2',methods=['GET'])
	def Api2():
	paramname1 = request.args.get("searchparam1")
	paramname2 = request.args.get("searchparam2")
	return str(paramname1 + paramname2)
	@app.route('/ApplyEncodedTransformation',methods=['POST'])
	def ApplyEncodedTransformation():
	try:
	paramname1 = request.values.get("searchparam1")
	print(paramname1)
	encodedimage = request.values.get("searchparam2")
	print(encodedimage)
	im = Image.open(io.BytesIO(base64.b64decode(encodedimage)))
	input_filename = r'image1.png'
	im.save(input_filename, 'PNG')
	with open(input_filename, "rb") as imagedata:
	encoded_string = base64.b64encode(imagedata.read())
	return encoded_string
	except:
	return 'Error'
	@app.route('/ApplySimpleImageTransfer',methods=['POST'])
	def ApplySimpleImageTransfer():
	try:
	file = request.files['image']
	img = Image.open(file.stream)
	result_file_name = 'Inputimage.jpg'
	img.save(result_file_name)
	encoded_string = ""
	with open(result_file_name, "rb") as imagedata:
	encoded_string = base64.b64encode(imagedata.read())
	return encoded_string
	except:
	return 'Error'
	if __name__ == "__main__":
	app.run(host='localhost',port=4321,threaded=True)

view raw APIRequest.py hosted with ❤ by GitHub

	import requests
	import time
	import cv2
	import base64
	def passanimagetest():
	url = 'http://localhost:4321/ApplySimpleImageTransfer'
	#Pick Random image for test
	my_img = {'searchparam1':'sendimage','image': open(r'1.jpg','rb')}
	#Send the request
	response = requests.post(url,files=my_img,timeout=20)
	if response.status_code == 200:
	print(response.content)
	with open(r"result.png", "wb") as fh:
	fh.write(base64.decodebytes(response.content))
	def passanimagetransformation():
	url = 'http://localhost:4321/ApplyEncodedTransformation'
	encoded_string = ""
	with open(r'1.jpg', "rb") as imagedata:
	encoded_string = base64.b64encode(imagedata.read())
	#print(encoded_string)
	data = {'searchparam1': 'Client1','searchparam2': encoded_string}
	response = requests.post(url, data)
	if response.status_code == 200:
	print(response.content)
	with open(r"result.png", "wb") as fh:
	fh.write(base64.decodebytes(response.content))
	#passanimagetest()
	passanimagetransformation()

view raw APItest.py hosted with ❤ by GitHub

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