Flask TypeError：“str”和“int”的实例之间不支持“<”

Question

I'm trying to learn Flash by doing exercise, but I got an error "TypeError: '<' not supported between instances of 'str' and 'int'".

from flask import Flask

app = Flask(__name__)

@app.route('/fib/<int:n>/')

def fibo(n):
    n = format(n)
    if n < 2:
        return 1
    return fibo(n -1) + fibo(n -2)

Answer 1

You are trying to make a mathematical comparison between a string and an integer. You need to convert n to a number before comparing it to see if it is less than 2. This means changing format(n) to some other function to convert n to a number.

Please mark as correct if this helps.