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basic one file Flask example to explain routes and replacement fields
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| from flask import Flask | |
| app = Flask(__name__) | |
| @app.route("/") | |
| def main(): | |
| return "Hello world" | |
| def generate_style(class_name, color): | |
| style = f"<style> .{class_name} {{ background-color: {color} }}</style>" | |
| return style | |
| @app.route("/user/<id>") | |
| def user(id): | |
| style_tag = generate_style("red", "red") | |
| whole_page = """<html><head>{}</head><body><div class="red">Hello user number {}</div></body></html>""".format(style_tag, id) | |
| return whole_page | |
| if __name__ == "__main__": | |
| app.run(debug=True) |
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