278. First Bad Version [easy] (Python)

题目链接

https://leetcode.com/problems/first-bad-version/

题目原文

You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality check. Since each version is developed based on the previous version, all the versions after a bad version are also bad.

Suppose you have n versions [1, 2, ..., n] and you want to find out the first bad one, which causes all the following ones to be bad.

You are given an API bool isBadVersion(version) which will return whether version is bad. Implement a function to find the first bad version. You should minimize the number of calls to the API.

题目翻译

大概意思就是：假设你有n个版本号 [1, 2, …, n]， 其中从某个版本号开始往后的所有版本都是错误版本，你想找到第一个错误的版本号。
你可以调用一