app.py

from flask import Flask, render_template, request, jsonify
import re

app = Flask(__name__)

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/results', methods=['POST'])
def results():
    if request.method == 'POST':
        test_string = request.form.get('test_string')
        regex_pattern = request.form.get('regex_pattern')
        matches = re.findall(regex_pattern, test_string)
        num_matches = len(matches)
        digit_or_string_count = sum(1 for char in test_string if char.isdigit() or char.isalpha())

        return render_template('index.html', test_string=test_string, regex_pattern=regex_pattern,
                               matches=matches, num_matches=num_matches, digit_or_string_count=digit_or_string_count)

@app.route('/validate-email', methods=['POST'])
def validate_email():
    if request.method == 'POST':
        email = request.form.get('email')
        regex_pattern = r'^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$'
        is_valid = re.match(regex_pattern, email) is not None
        result_message = "Valid email address." if is_valid else "Invalid email address."
        return render_template('index.html',email= email,is_valid = is_valid,result_message = result_message)

if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0', port=5000)