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‎13-Flask/flask/api.py‎

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### Put and Delete-HTTP Verbs
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### Working With API's--Json
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from flask import Flask, jsonify, request
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app = Flask(__name__)
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##Initial Data in my to do list
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items = [
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{"id": 1, "name": "Item 1", "description": "This is item 1"},
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{"id": 2, "name": "Item 2", "description": "This is item 2"}
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]
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@app.route('/')
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def home():
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return "Welcome To The Sample To DO List App"
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## Get: Retrieve all the items
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@app.route('/items',methods=['GET'])
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def get_items():
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return jsonify(items)
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## get: Retireve a specific item by Id
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@app.route('/items/<int:item_id>',methods=['GET'])
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def get_item(item_id):
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item=next((item for item in items if item["id"]==item_id),None)
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if item is None:
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return jsonify({"error":"item not found"})
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return jsonify(item)
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## Post :create a new task- API
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@app.route('/items',methods=['POST'])
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def create_item():
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if not request.json or not 'name' in request.json:
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return jsonify({"error":"item not found"})
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new_item={
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"id": items[-1]["id"] + 1 if items else 1,
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"name":request.json['name'],
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"description":request.json["description"]
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}
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items.append(new_item)
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return jsonify(new_item)
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# Put: Update an existing item
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@app.route('/items/<int:item_id>',methods=['PUT'])
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def update_item(item_id):
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item = next((item for item in items if item["id"] == item_id), None)
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if item is None:
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return jsonify({"error": "Item not found"})
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item['name'] = request.json.get('name', item['name'])
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item['description'] = request.json.get('description', item['description'])
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return jsonify(item)
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# DELETE: Delete an item
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@app.route('/items/<int:item_id>', methods=['DELETE'])
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def delete_item(item_id):
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global items
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items = [item for item in items if item["id"] != item_id]
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return jsonify({"result": "Item deleted"})
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if __name__ == '__main__':
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app.run(debug=True)

‎13-Flask/flask/app.py‎

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from flask import Flask
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'''
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It creates an instance of the Flask class,
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which will be your WSGI (Web Server Gateway Interface) application.
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'''
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###WSGI Application
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app=Flask(__name__)
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@app.route("/")
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def welcome():
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return "Welcome to this best Flask course.This should be an amazing course"
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@app.route("/index")
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def index():
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return "Welcome to the index page"
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if __name__=="__main__":
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app.run(debug=True)

‎13-Flask/flask/getpost.py‎

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from flask import Flask,render_template,request
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'''
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It creates an instance of the Flask class,
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which will be your WSGI (Web Server Gateway Interface) application.
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'''
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###WSGI Application
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app=Flask(__name__)
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@app.route("/")
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def welcome():
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return "<html><H1>Welcome to the flask course</H1></html>"
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@app.route("/index",methods=['GET'])
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def index():
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return render_template('index.html')
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@app.route('/about')
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def about():
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return render_template('about.html')
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@app.route('/form',methods=['GET','POST'])
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def form():
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if request.method=='POST':
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name=request.form['name']
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return f'Hello {name}!'
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return render_template('form.html')
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@app.route('/submit',methods=['GET','POST'])
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def submit():
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if request.method=='POST':
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name=request.form['name']
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return f'Hello {name}!'
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return render_template('form.html')
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if __name__=="__main__":
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app.run(debug=True)

‎13-Flask/flask/jinja.py‎

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### Building Url Dynamically
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## Variable Rule
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### Jinja 2 Template Engine
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### Jinja2 Template Engine
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'''
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{{ }} expressions to print output in html
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{%...%} conditions, for loops
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{#...#} this is for comments
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'''
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from flask import Flask,render_template,request,redirect,url_for
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'''
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It creates an instance of the Flask class,
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which will be your WSGI (Web Server Gateway Interface) application.
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'''
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###WSGI Application
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app=Flask(__name__)
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@app.route("/")
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def welcome():
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return "<html><H1>Welcome to the flask course</H1></html>"
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@app.route("/index",methods=['GET'])
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def index():
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return render_template('index.html')
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@app.route('/about')
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def about():
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return render_template('about.html')
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## Variable Rule
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@app.route('/success/<int:score>')
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def success(score):
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res=""
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if score>=50:
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res="PASSED"
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else:
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res="FAILED"
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return render_template('result.html',results=res)
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## Variable Rule
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@app.route('/successres/<int:score>')
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def successres(score):
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res=""
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if score>=50:
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res="PASSED"
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else:
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res="FAILED"
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exp={'score':score,"res":res}
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return render_template('result1.html',results=exp)
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## if confition
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@app.route('/sucessif/<int:score>')
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def successif(score):
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return render_template('result.html',results=score)
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@app.route('/fail/<int:score>')
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def fail(score):
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return render_template('result.html',results=score)
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@app.route('/submit',methods=['POST','GET'])
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def submit():
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total_score=0
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if request.method=='POST':
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science=float(request.form['science'])
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maths=float(request.form['maths'])
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c=float(request.form['c'])
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data_science=float(request.form['datascience'])
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total_score=(science+maths+c+data_science)/4
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else:
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return render_template('getresult.html')
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return redirect(url_for('successres',score=total_score))
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if __name__=="__main__":
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app.run(debug=True)
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‎13-Flask/flask/main.py‎

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from flask import Flask,render_template
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'''
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It creates an instance of the Flask class,
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which will be your WSGI (Web Server Gateway Interface) application.
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'''
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###WSGI Application
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app=Flask(__name__)
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@app.route("/")
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def welcome():
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return "<html><H1>Welcome to the flask course</H1></html>"
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@app.route("/index")
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def index():
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return render_template('index.html')
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@app.route('/about')
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def about():
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return render_template('about.html')
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if __name__=="__main__":
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app.run(debug=True)

‎13-Flask/flask/sample.json‎

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{"name": "New Item", "description": "This is a new item"}
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{"name": "Updated Item", "description": "This item has been updated"}

‎13-Flask/flask/templates/about.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>About</title>
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</head>
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<body>
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<h1>About</h1>
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<p>This is the about page of my Flask app.</p>
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</body>
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</html>

‎13-Flask/flask/templates/form.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Form</title>
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</head>
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<body>
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<h1>Submit a Form</h1>
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<form action="/submit" method="post">
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<label for="name">Name:</label>
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<input type="text" id="name" name="name">
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<input type="submit" value="Submit">
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</form>
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</body>
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</html>

‎13-Flask/flask/templates/getresult.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<link rel="stylesheet" href="{{ url_for('static',filename='css/style.css') }}">
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<script type="text/javascript" src="{{ url_for('static',filename='script/script.js') }}">
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</script>
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</head>
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<body>
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<h2>HTML Forms</h2>
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<form action="/submit" method='post'>
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<label for="Science">Science:</label><br>
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<input type="text" id="science" name="science" value="0"><br>
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<label for="Maths">Maths:</label><br>
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<input type="text" id="maths" name="maths" value="0"><br><br>
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<label for="C ">C:</label><br>
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<input type="text" id="c" name="c" value="0"><br><br>
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<label for="datascience">Data Science:</label><br>
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<input type="text" id="datascience" name="datascience" value="0"><br><br>
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<input type="submit" value="Submit">
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</form>
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<p>If you click the "Submit" button, the form-data will be sent to a page called "/submit".</p>
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</body>
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</html>

‎13-Flask/flask/templates/index.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Flask App</title>
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</head>
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<body>
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<h1>Welcome to My Flask App!</h1>
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<p>This is a simple web application built with Flask.</p>
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</body>
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</html>

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