Python爬虫遇到requests.exceptions.InvalidURL: Proxy URL had no scheme, should start with http:// or https://问题，问题截图如下：

问题解决

使用如下代码：

proxies = { "http": None, "https": None}

# 请求页面代码
img_resp = requests.get(img, proxies=proxies)

问题完美解决！